new semester, new repo structure
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Semester 1/Assignments/MP4_CalebFontenot/MP4_CalebFontenot.html
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Semester 1/Assignments/MP4_CalebFontenot/MP4_CalebFontenot.html
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<title>MP4_CalebFontenot.java</title>
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<table width="100%"><tr><td align="center">/home/caleb/ASDV-Java/Assignments/MP4_CalebFontenot/src/mp4_calebfontenot/MP4_CalebFontenot.java</td></tr></table>
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<pre>
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<span class="comment">/*</span>
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<span class="comment"> * To change this license header, choose License Headers in Project Properties.</span>
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<span class="comment"> * To change this template file, choose Tools | Templates</span>
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<span class="comment"> * and open the template in the editor.</span>
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<span class="comment"> */</span>
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<span class="literal">package</span> mp4_calebfontenot;
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<span class="literal">import</span> java.util.Scanner;
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<span class="comment">/**</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="ST0">@author</span> <span class="comment">caleb</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">class</span> <span class="ST1">MP4_CalebFontenot</span> {
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<span class="literal">static</span> <span class="literal">boolean</span> <span class="ST2">debug</span> = <span class="literal">false</span>;
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<span class="comment">// Yes, I know the debugger exists. This is just a bit easier imho</span>
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<span class="comment">/**</span>
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<span class="comment"> * </span><span class="ST0">If</span> <span class="ST0">the</span> <span class="ST0">result</span> <span class="ST0">from</span> <span class="ST0">Step</span><span class="ST0"> 4 </span><span class="ST0">is</span> <span class="ST0">divisible</span> <span class="ST0">by</span><span class="ST0"> 10, </span><span class="ST0">the</span> <span class="ST0">card</span> <span class="ST0">number</span> <span class="ST0">is</span> <span class="ST0">valid</span><span class="ST0">; </span><span class="ST0">otherwise</span><span class="ST0">, </span><span class="ST0">it</span> <span class="ST0">is</span> <span class="ST0">invalid</span><span class="ST0">.</span> <span class="comment">For</span> <span class="comment">example</span><span class="comment">, </span><span class="comment">the</span> <span class="comment">number</span><span class="comment"> 4388576018402626 </span><span class="comment">is</span> <span class="comment">invalid</span><span class="comment">, </span><span class="comment">but</span> <span class="comment">the</span> <span class="comment">number</span><span class="comment"> 4388576018410707 </span><span class="comment">is</span> <span class="comment">valid</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="ST0">@param</span> CreditCard
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<span class="comment"> * </span><span class="ST0">@return</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">static</span> <span class="literal">boolean</span> <span class="ST3">isValid</span>(String CreditCard) {
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<span class="literal">int</span> sumResult = MP4_CalebFontenot.<span class="ST4">sum</span>(MP4_CalebFontenot.<span class="ST4">doubleDigitsAndSumSingleDigits</span>(CreditCard), MP4_CalebFontenot.<span class="ST4">addOddNumbersFromRightToLeft</span>(CreditCard));
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<span class="literal">int</span> divisionResult = sumResult % 10;
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<span class="literal">if</span> (<span class="ST2">debug</span>) {
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System.<span class="ST2">out</span>.println(sumResult + <span class="string">"</span><span class="string">, </span><span class="string">"</span> + divisionResult);
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}
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<span class="literal">if</span> (divisionResult == 0) {
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<span class="literal">return</span> <span class="literal">true</span>;
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} <span class="literal">else</span> {
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<span class="literal">return</span> <span class="literal">false</span>;
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}
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}
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<span class="comment">/**</span>
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<span class="comment"> * </span><span class="ST0">Sum</span> <span class="ST0">the</span> <span class="ST0">results</span> <span class="ST0">from</span> <span class="ST0">Steps</span><span class="ST0"> 1, 2 </span><span class="ST0">and</span> <span class="ST0">Step</span><span class="ST0"> 3</span><span class="ST0">.</span><span class="comment"> 37 + 38 = 75</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="ST0">@param</span> step1andSep2 <span class="comment">result</span> <span class="comment">form</span> <span class="comment">step</span><span class="comment"> 1 </span><span class="comment">and</span> <span class="comment">step</span><span class="comment"> 2</span>
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<span class="comment"> * </span><span class="ST0">@param</span> step3 <span class="comment">result</span> <span class="comment">form</span> <span class="comment">step</span><span class="comment"> 3</span>
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<span class="comment"> * </span><span class="ST0">@return</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">static</span> <span class="literal">int</span> <span class="ST3">sum</span>(<span class="literal">int</span> step1andStep2, <span class="literal">int</span> step3) {
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<span class="literal">return</span> step1andStep2 + step3;
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}
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<span class="comment">/**</span>
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<span class="comment"> * </span><span class="ST0">Add</span> <span class="ST0">all</span> <span class="ST0">digits</span> <span class="ST0">in</span> <span class="ST0">the</span> <span class="ST0">odd</span> <span class="ST0">places</span> <span class="ST0">from</span> <span class="ST0">right</span> <span class="ST0">to</span> <span class="ST0">left</span> <span class="ST0">in</span> <span class="ST0">the</span> <span class="ST0">card</span> <span class="ST0">number</span><span class="ST0">.</span><span class="comment"> 6 + 6 + 0 + 8 + 0 + 7 + 8 + 3 = 38</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="ST0">@param</span><span class="comment"> -</span>creditCard <span class="comment">the</span> <span class="comment">credit</span> <span class="comment">card</span> <span class="comment">number</span> <span class="comment">to</span> <span class="comment">be</span> <span class="comment">processed</span><span class="comment">.</span>
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<span class="comment"> * </span><span class="ST0">@return</span> <span class="comment">the</span> <span class="comment">sum</span> <span class="comment">of</span> <span class="comment">digits</span> <span class="comment">at</span> <span class="comment">odd</span> <span class="comment">position</span> <span class="comment">from</span> <span class="comment">right</span> <span class="comment">to</span> <span class="comment">left</span><span class="comment">.</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">static</span> <span class="literal">int</span> <span class="ST3">addOddNumbersFromRightToLeft</span>(String creditCard) {
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||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Now executing addOddNumbersFromRightToLeft()</span><span class="string">"</span>);
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}
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<span class="comment">// Iterate through string</span>
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<span class="literal">int</span> creditCardLength = creditCard.length();
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<span class="literal">int</span> currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
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<span class="comment">//System.out.println(creditCard.length());</span>
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<span class="literal">for</span> (<span class="literal">int</span> i = (creditCardLength - 1); i >= 0; i--) {
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currentDigit = Character.<span class="ST4">getNumericValue</span>(creditCard.charAt(i)); <span class="comment">// Parses current digit as an integer so we can do math on it</span>
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<span class="literal">if</span> (currentDigit % 2 != 0) { <span class="comment">// Is this number an odd number?</span>
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sum += currentDigit;
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<span class="literal">if</span> (<span class="ST2">debug</span>) {
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System.<span class="ST2">out</span>.println(currentDigit);
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">sum: </span><span class="string">"</span> + sum);
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}
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}
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}
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<span class="literal">return</span> sum;
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}
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<span class="comment">/**</span>
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<span class="comment"> * </span><span class="ST0">Double</span> <span class="ST0">every</span> <span class="ST0">second</span> <span class="ST0">digit</span> <span class="ST0">from</span> <span class="ST0">right</span> <span class="ST0">to</span> <span class="ST0">left</span><span class="ST0">.</span> <span class="comment">If</span> <span class="comment">doubling</span> <span class="comment">of</span> <span class="comment">a</span> <span class="comment">digit</span> <span class="comment">results</span> <span class="comment">in</span> <span class="comment">a</span> <span class="comment">two</span><span class="comment">-</span><span class="comment">digit</span> <span class="comment">number</span><span class="comment">, </span><span class="comment">add</span> <span class="comment">up</span> <span class="comment">the</span> <span class="comment">two</span> <span class="comment">digits</span> <span class="comment">to</span> <span class="comment">get</span> <span class="comment">a</span> <span class="comment">single</span><span class="comment">-</span><span class="comment">digit</span> <span class="comment">number</span><span class="comment">.</span><span class="comment"> 2 * 2 = 4 2 * 2 = 4 4 * 2 = 8 1 * 2 = 2 6 * 2 = 12 (1 + 2 = 3) 5 * 2 = 10 (1 + 0 = 1) 8 * 2 = 16 (1 + 6 = 7) 4 * 2 = 8 </span><span class="comment">Step</span><span class="comment"> 2 </span><span class="comment">Now</span> <span class="comment">add</span> <span class="comment">all</span> <span class="comment">single</span><span class="comment">-</span><span class="comment">digit</span> <span class="comment">numbers</span> <span class="comment">from</span> <span class="comment">Step</span><span class="comment"> 1</span><span class="comment">.</span><span class="comment"> 4 + 4 + 8 + 2 + 3 + 1 + 7 + 8 = 37</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="ST0">@param</span><span class="comment"> -</span>creditCard <span class="comment">the</span> <span class="comment">credit</span> <span class="comment">card</span> <span class="comment">number</span> <span class="comment">to</span> <span class="comment">be</span> <span class="comment">processed</span><span class="comment">.</span>
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<span class="comment"> * </span><span class="ST0">@return</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">static</span> <span class="literal">int</span> <span class="ST3">doubleDigitsAndSumSingleDigits</span>(String creditCard) {
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<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Now executing doubleDigitsAndSumSingleDigits()</span><span class="string">"</span>);
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}
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<span class="comment">// Iterate through string</span>
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<span class="literal">int</span> creditCardLength = creditCard.length();
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<span class="literal">int</span> currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
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<span class="comment">//System.out.println(creditCard.length());</span>
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||||
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<span class="literal">for</span> (<span class="literal">int</span> i = (creditCardLength - 1); i >= 0; i--) {
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<span class="literal">if</span> (i % 2 == 0) {
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currentDigit = Character.<span class="ST4">getNumericValue</span>(creditCard.charAt(i)); <span class="comment">// Parses current digit as an integer so we can do math on it</span>
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||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">current digit: </span><span class="string">"</span> + currentDigit);
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}
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digitProduct = currentDigit * 2;
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<span class="literal">if</span> (digitProduct > 9) { <span class="comment">// Product is larger than 9. Typecast the integer back into a string so we can seperate the digits and add them together.</span>
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String workingString = Integer.<span class="ST4">toString</span>(digitProduct);
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tensDigit = Character.<span class="ST4">getNumericValue</span>(workingString.charAt(0));
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onesDigit = Character.<span class="ST4">getNumericValue</span>(workingString.charAt(1));
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<span class="literal">if</span> (<span class="ST2">debug</span>) {
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">tensDigit is </span><span class="string">"</span> + tensDigit);
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">onesDigit is </span><span class="string">"</span> + onesDigit);
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}
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digitProduct = (tensDigit + onesDigit);
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}
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sum += digitProduct;
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}
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}
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<span class="literal">if</span> (<span class="ST2">debug</span>) {
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">The sum is: </span><span class="string">"</span> + sum);
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}
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<span class="literal">return</span> sum;
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}
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<span class="comment">/**</span>
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||||
<span class="comment"> * </span><span class="ST0">Displays</span> <span class="ST0">Q</span><span class="ST0">/</span><span class="ST0">q</span> <span class="ST0">or</span> <span class="ST0">C</span><span class="ST0">/</span><span class="ST0">c</span><span class="ST0">.</span> <span class="comment">If</span> <span class="comment">the</span> <span class="comment">user</span> <span class="comment">enters</span> <span class="comment">C</span><span class="comment">, </span><span class="comment">it</span> <span class="comment">read</span> <span class="comment">the</span> <span class="comment">credit</span> <span class="comment">number</span> <span class="comment">and</span> <span class="comment">returns</span> <span class="comment">it</span> <span class="comment">as</span> <span class="comment">String</span><span class="comment">.</span> <span class="comment">If</span> <span class="comment">the</span> <span class="comment">user</span> <span class="comment">types</span> <span class="comment">Q</span><span class="comment">/</span><span class="comment">q</span> <span class="comment">returns</span><span class="comment"> 0</span>
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||||
<span class="comment"> *</span>
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||||
<span class="comment"> * </span><span class="ST0">@return</span> <span class="comment">a</span> <span class="comment">string</span> <span class="comment">with</span> <span class="comment">credit</span> <span class="comment">card</span> <span class="comment">number</span> <span class="comment">or</span><span class="comment"> 0</span><span class="comment">.</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">static</span> String <span class="ST3">menu</span>() {
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String userInput = <span class="string">""</span>;
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Scanner input = <span class="literal">new</span> Scanner(System.<span class="ST2">in</span>);
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<span class="literal">while</span> (!userInput.equals(<span class="string">"</span><span class="string">0</span><span class="string">"</span>))<span class="comment">//user has not entered Q/q</span>
|
||||
{
|
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Press Q/q to quit</span><span class="string">"</span>);
|
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System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Press C/c to enter a credit card</span><span class="string">"</span>);
|
||||
userInput = input.next();
|
||||
<span class="literal">if</span> (userInput.equalsIgnoreCase(<span class="string">"</span><span class="string">q</span><span class="string">"</span>)) {
|
||||
userInput = <span class="string">"</span><span class="string">0</span><span class="string">"</span>;
|
||||
}
|
||||
<span class="literal">if</span> (userInput.equalsIgnoreCase(<span class="string">"</span><span class="string">c</span><span class="string">"</span>)) {
|
||||
System.<span class="ST2">out</span>.print(<span class="string">"</span><span class="string">Please enter a credit card number: </span><span class="string">"</span>);
|
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userInput = input.next();
|
||||
<span class="literal">try</span> { <span class="comment">//Test to see if user has given us a string that looks like a credit card number</span>
|
||||
<span class="comment">//Does it sucessfully convert to an integer?</span>
|
||||
Long.<span class="ST4">parseLong</span>(userInput);
|
||||
|
||||
} <span class="literal">catch</span>(Exception e) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Invalid input: String doesn't look like a credit card, it failed successfully convert into an integer.</span><span class="string">"</span>);
|
||||
<span class="comment">//break;</span>
|
||||
}
|
||||
<span class="literal">if</span> (userInput.length() != 16) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Invalid input: String doesn't look like a credit card, incorrect length.</span><span class="string">"</span>);
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">length: </span><span class="string">"</span> + userInput.length());
|
||||
}
|
||||
} <span class="literal">else</span> {
|
||||
<span class="literal">break</span>;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
<span class="literal">return</span> userInput;
|
||||
}
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span> args
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> <span class="literal">void</span> <span class="ST3">main</span>(String[] args) {
|
||||
|
||||
String sampleCreditCard = <span class="string">"</span><span class="string">4388576018410707</span><span class="string">"</span>;
|
||||
String userInput = <span class="ST4">menu</span>();
|
||||
<span class="literal">if</span> (userInput == <span class="string">"</span><span class="string">0</span><span class="string">"</span>) { <span class="comment">// Stop program execution if credit card not entered</span>
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Credit card not entered!</span><span class="string">"</span>);
|
||||
<span class="comment">//System.exit(0);</span>
|
||||
<span class="literal">return</span>;
|
||||
}
|
||||
|
||||
<span class="literal">boolean</span> creditCardValidity = MP4_CalebFontenot.<span class="ST4">isValid</span>(userInput);
|
||||
String validityString;
|
||||
<span class="literal">if</span> (creditCardValidity) {
|
||||
validityString = <span class="string">"</span><span class="string">valid</span><span class="string">"</span>;
|
||||
} <span class="literal">else</span> {
|
||||
validityString = <span class="string">"</span><span class="string">invalid</span><span class="string">"</span>;
|
||||
}
|
||||
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">The credit card </span><span class="string">"</span> + userInput + <span class="string">"</span><span class="string"> is </span><span class="string">"</span> + validityString);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
</pre></body>
|
||||
</html>
|
||||
197
Semester 1/Assignments/MP4_CalebFontenot/MP4_CalebFontenot.html.
Normal file
197
Semester 1/Assignments/MP4_CalebFontenot/MP4_CalebFontenot.html.
Normal file
@@ -0,0 +1,197 @@
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
|
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<html>
|
||||
<head>
|
||||
<title>MP4_CalebFontenot.java</title>
|
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
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<style type="text/css">
|
||||
<!--
|
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body {color: #000000; background-color: #ffffff; font-family: monospace}
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pre {color: #000000; background-color: #ffffff; font-family: monospace}
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table {color: #404040; background-color: #e9e8e2; font-family: monospace}
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||||
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||||
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||||
.comment {color: #969696}
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||||
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-->
|
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</style>
|
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</head>
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<body>
|
||||
<table width="100%"><tr><td align="center">/home/caleb/ASDV-Java/Assignments/MP4_CalebFontenot/src/mp4_calebfontenot/MP4_CalebFontenot.java</td></tr></table>
|
||||
<pre>
|
||||
<span class="comment">/*</span>
|
||||
<span class="comment"> * To change this license header, choose License Headers in Project Properties.</span>
|
||||
<span class="comment"> * To change this template file, choose Tools | Templates</span>
|
||||
<span class="comment"> * and open the template in the editor.</span>
|
||||
<span class="comment"> */</span>
|
||||
<span class="literal">package</span> mp4_calebfontenot;
|
||||
|
||||
<span class="literal">import</span> java.util.Scanner;
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@author</span> <span class="comment">caleb</span>
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">class</span> <span class="ST1">MP4_CalebFontenot</span> {
|
||||
|
||||
<span class="literal">static</span> <span class="literal">boolean</span> <span class="ST2">debug</span> = <span class="literal">true</span>;
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> * </span><span class="ST0">If</span> <span class="ST0">the</span> <span class="ST0">result</span> <span class="ST0">from</span> <span class="ST0">Step</span><span class="ST0"> 4 </span><span class="ST0">is</span> <span class="ST0">divisible</span> <span class="ST0">by</span><span class="ST0"> 10, </span><span class="ST0">the</span> <span class="ST0">card</span> <span class="ST0">number</span> <span class="ST0">is</span> <span class="ST0">valid</span><span class="ST0">; </span><span class="ST0">otherwise</span><span class="ST0">, </span><span class="ST0">it</span> <span class="ST0">is</span> <span class="ST0">invalid</span><span class="ST0">.</span> <span class="comment">For</span> <span class="comment">example</span><span class="comment">, </span><span class="comment">the</span> <span class="comment">number</span><span class="comment"> 4388576018402626 </span><span class="comment">is</span> <span class="comment">invalid</span><span class="comment">, </span><span class="comment">but</span> <span class="comment">the</span> <span class="comment">number</span><span class="comment"> 4388576018410707 </span><span class="comment">is</span> <span class="comment">valid</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span> CreditCard
|
||||
<span class="comment"> * </span><span class="ST0">@return</span>
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> <span class="literal">boolean</span> <span class="ST3">isValid</span>(String CreditCard) {
|
||||
<span class="literal">int</span> sumResult = MP4_CalebFontenot.<span class="ST4">sum</span>(MP4_CalebFontenot.<span class="ST4">doubleDigitsAndSumSingleDigits</span>(CreditCard), MP4_CalebFontenot.<span class="ST4">addOddNumbersFromRightToLeft</span>(CreditCard));
|
||||
<span class="literal">int</span> divisionResult = sumResult % 10;
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(sumResult + <span class="string">"</span><span class="string">, </span><span class="string">"</span> + divisionResult);
|
||||
}
|
||||
<span class="literal">if</span> (divisionResult == 0) {
|
||||
<span class="literal">return</span> <span class="literal">true</span>;
|
||||
} <span class="literal">else</span> {
|
||||
<span class="literal">return</span> <span class="literal">false</span>;
|
||||
}
|
||||
}
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> * </span><span class="ST0">Sum</span> <span class="ST0">the</span> <span class="ST0">results</span> <span class="ST0">from</span> <span class="ST0">Steps</span><span class="ST0"> 1, 2 </span><span class="ST0">and</span> <span class="ST0">Step</span><span class="ST0"> 3</span><span class="ST0">.</span><span class="comment"> 37 + 38 = 75</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span> step1andSep2 <span class="comment">result</span> <span class="comment">form</span> <span class="comment">step</span><span class="comment"> 1 </span><span class="comment">and</span> <span class="comment">step</span><span class="comment"> 2</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span> step3 <span class="comment">result</span> <span class="comment">form</span> <span class="comment">step</span><span class="comment"> 3</span>
|
||||
<span class="comment"> * </span><span class="ST0">@return</span>
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> <span class="literal">int</span> <span class="ST3">sum</span>(<span class="literal">int</span> step1andStep2, <span class="literal">int</span> step3) {
|
||||
<span class="literal">return</span> step1andStep2 + step3;
|
||||
}
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> * </span><span class="ST0">Add</span> <span class="ST0">all</span> <span class="ST0">digits</span> <span class="ST0">in</span> <span class="ST0">the</span> <span class="ST0">odd</span> <span class="ST0">places</span> <span class="ST0">from</span> <span class="ST0">right</span> <span class="ST0">to</span> <span class="ST0">left</span> <span class="ST0">in</span> <span class="ST0">the</span> <span class="ST0">card</span> <span class="ST0">number</span><span class="ST0">.</span><span class="comment"> 6 + 6 + 0 + 8 + 0 + 7 + 8 + 3 = 38</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span><span class="comment"> -</span>creditCard <span class="comment">the</span> <span class="comment">credit</span> <span class="comment">card</span> <span class="comment">number</span> <span class="comment">to</span> <span class="comment">be</span> <span class="comment">processed</span><span class="comment">.</span>
|
||||
<span class="comment"> * </span><span class="ST0">@return</span> <span class="comment">the</span> <span class="comment">sum</span> <span class="comment">of</span> <span class="comment">digits</span> <span class="comment">at</span> <span class="comment">odd</span> <span class="comment">position</span> <span class="comment">from</span> <span class="comment">right</span> <span class="comment">to</span> <span class="comment">left</span><span class="comment">.</span>
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> <span class="literal">int</span> <span class="ST3">addOddNumbersFromRightToLeft</span>(String creditCard) {
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Now executing addOddNumbersFromRightToLeft()</span><span class="string">"</span>);
|
||||
}
|
||||
<span class="comment">// Iterate through string</span>
|
||||
<span class="literal">int</span> creditCardLength = creditCard.length();
|
||||
<span class="literal">int</span> currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
|
||||
<span class="comment">//System.out.println(creditCard.length());</span>
|
||||
|
||||
<span class="literal">for</span> (<span class="literal">int</span> i = (creditCardLength - 1); i >= 0; i--) {
|
||||
currentDigit = Character.<span class="ST4">getNumericValue</span>(creditCard.charAt(i)); <span class="comment">// Parses current digit as an integer so we can do math on it</span>
|
||||
<span class="literal">if</span> (currentDigit % 2 != 0) { <span class="comment">// Is this number an odd number?</span>
|
||||
sum += currentDigit;
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(currentDigit);
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">sum: </span><span class="string">"</span> + sum);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
<span class="literal">return</span> sum;
|
||||
}
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> * </span><span class="ST0">Double</span> <span class="ST0">every</span> <span class="ST0">second</span> <span class="ST0">digit</span> <span class="ST0">from</span> <span class="ST0">right</span> <span class="ST0">to</span> <span class="ST0">left</span><span class="ST0">.</span> <span class="comment">If</span> <span class="comment">doubling</span> <span class="comment">of</span> <span class="comment">a</span> <span class="comment">digit</span> <span class="comment">results</span> <span class="comment">in</span> <span class="comment">a</span> <span class="comment">two</span><span class="comment">-</span><span class="comment">digit</span> <span class="comment">number</span><span class="comment">, </span><span class="comment">add</span> <span class="comment">up</span> <span class="comment">the</span> <span class="comment">two</span> <span class="comment">digits</span> <span class="comment">to</span> <span class="comment">get</span> <span class="comment">a</span> <span class="comment">single</span><span class="comment">-</span><span class="comment">digit</span> <span class="comment">number</span><span class="comment">.</span><span class="comment"> 2 * 2 = 4 2 * 2 = 4 4 * 2 = 8 1 * 2 = 2 6 * 2 = 12 (1 + 2 = 3) 5 * 2 = 10 (1 + 0 = 1) 8 * 2 = 16 (1 + 6 = 7) 4 * 2 = 8 </span><span class="comment">Step</span><span class="comment"> 2 </span><span class="comment">Now</span> <span class="comment">add</span> <span class="comment">all</span> <span class="comment">single</span><span class="comment">-</span><span class="comment">digit</span> <span class="comment">numbers</span> <span class="comment">from</span> <span class="comment">Step</span><span class="comment"> 1</span><span class="comment">.</span><span class="comment"> 4 + 4 + 8 + 2 + 3 + 1 + 7 + 8 = 37</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span><span class="comment"> -</span>creditCard <span class="comment">the</span> <span class="comment">credit</span> <span class="comment">card</span> <span class="comment">number</span> <span class="comment">to</span> <span class="comment">be</span> <span class="comment">processed</span><span class="comment">.</span>
|
||||
<span class="comment"> * </span><span class="ST0">@return</span>
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> <span class="literal">int</span> <span class="ST3">doubleDigitsAndSumSingleDigits</span>(String creditCard) {
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Now executing doubleDigitsAndSumSingleDigits()</span><span class="string">"</span>);
|
||||
}
|
||||
<span class="comment">// Iterate through string</span>
|
||||
<span class="literal">int</span> creditCardLength = creditCard.length();
|
||||
<span class="literal">int</span> currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
|
||||
<span class="comment">//System.out.println(creditCard.length());</span>
|
||||
|
||||
<span class="literal">for</span> (<span class="literal">int</span> i = (creditCardLength - 1); i >= 0; i--) {
|
||||
<span class="literal">if</span> (i % 2 == 0) {
|
||||
currentDigit = Character.<span class="ST4">getNumericValue</span>(creditCard.charAt(i)); <span class="comment">// Parses current digit as an integer so we can do math on it</span>
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">current digit: </span><span class="string">"</span> + currentDigit);
|
||||
}
|
||||
digitProduct = currentDigit * 2;
|
||||
<span class="literal">if</span> (digitProduct > 9) { <span class="comment">// Product is larger than 9. Typecast the integer back into a string so we can seperate the digits and add them together.</span>
|
||||
String workingString = Integer.<span class="ST4">toString</span>(digitProduct);
|
||||
tensDigit = Character.<span class="ST4">getNumericValue</span>(workingString.charAt(0));
|
||||
onesDigit = Character.<span class="ST4">getNumericValue</span>(workingString.charAt(1));
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">tensDigit is </span><span class="string">"</span> + tensDigit);
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">onesDigit is </span><span class="string">"</span> + onesDigit);
|
||||
}
|
||||
digitProduct = (tensDigit + onesDigit);
|
||||
}
|
||||
sum += digitProduct;
|
||||
}
|
||||
|
||||
}
|
||||
<span class="literal">if</span> (<span class="ST2">debug</span>) {
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">The sum is: </span><span class="string">"</span> + sum);
|
||||
}
|
||||
<span class="literal">return</span> sum;
|
||||
}
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> * </span><span class="ST0">Displays</span> <span class="ST0">Q</span><span class="ST0">/</span><span class="ST0">q</span> <span class="ST0">or</span> <span class="ST0">C</span><span class="ST0">/</span><span class="ST0">c</span><span class="ST0">.</span> <span class="comment">If</span> <span class="comment">the</span> <span class="comment">user</span> <span class="comment">enters</span> <span class="comment">C</span><span class="comment">, </span><span class="comment">it</span> <span class="comment">read</span> <span class="comment">the</span> <span class="comment">credit</span> <span class="comment">number</span> <span class="comment">and</span> <span class="comment">returns</span> <span class="comment">it</span> <span class="comment">as</span> <span class="comment">String</span><span class="comment">.</span> <span class="comment">If</span> <span class="comment">the</span> <span class="comment">user</span> <span class="comment">types</span> <span class="comment">Q</span><span class="comment">/</span><span class="comment">q</span> <span class="comment">returns</span><span class="comment"> 0</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@return</span> <span class="comment">a</span> <span class="comment">string</span> <span class="comment">with</span> <span class="comment">credit</span> <span class="comment">card</span> <span class="comment">number</span> <span class="comment">or</span><span class="comment"> 0</span><span class="comment">.</span>
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> String <span class="ST3">menu</span>() {
|
||||
String userInput = <span class="string">""</span>;
|
||||
Scanner input = <span class="literal">new</span> Scanner(System.<span class="ST2">in</span>);
|
||||
|
||||
<span class="literal">while</span> (!userInput.equals(<span class="string">"</span><span class="string">0</span><span class="string">"</span>))<span class="comment">//user has not entered Q/q</span>
|
||||
{
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Press Q/q to quit</span><span class="string">"</span>);
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Press C/c to enter a credit card</span><span class="string">"</span>);
|
||||
userInput = input.next();
|
||||
<span class="literal">if</span> (userInput.equalsIgnoreCase(<span class="string">"</span><span class="string">q</span><span class="string">"</span>)) {
|
||||
userInput = <span class="string">"</span><span class="string">0</span><span class="string">"</span>;
|
||||
}
|
||||
<span class="literal">if</span> (userInput.equalsIgnoreCase(<span class="string">"</span><span class="string">c</span><span class="string">"</span>)) {
|
||||
System.<span class="ST2">out</span>.print(<span class="string">"</span><span class="string">Please enter a credit card number: </span><span class="string">"</span>);
|
||||
userInput = input.next();
|
||||
<span class="literal">break</span>;
|
||||
}
|
||||
}
|
||||
|
||||
<span class="literal">return</span> userInput;
|
||||
}
|
||||
|
||||
<span class="comment">/**</span>
|
||||
<span class="comment"> *</span>
|
||||
<span class="comment"> * </span><span class="ST0">@param</span> args
|
||||
<span class="comment">*/</span>
|
||||
<span class="literal">public</span> <span class="literal">static</span> <span class="literal">void</span> <span class="ST3">main</span>(String[] args) {
|
||||
|
||||
<span class="comment">//String sampleCreditCard = "4388576018410707";</span>
|
||||
String userInput = <span class="ST4">menu</span>();
|
||||
<span class="literal">if</span> (userInput == <span class="string">"</span><span class="string">0</span><span class="string">"</span>) { <span class="comment">// Stop program execution if credit card not entered</span>
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">Credit card not entered!</span><span class="string">"</span>);
|
||||
System.<span class="ST4">exit</span>(0);
|
||||
}
|
||||
|
||||
<span class="literal">boolean</span> creditCardValidity = MP4_CalebFontenot.<span class="ST4">isValid</span>(userInput);
|
||||
String validityString;
|
||||
<span class="literal">if</span> (creditCardValidity) {
|
||||
validityString = <span class="string">"</span><span class="string">valid</span><span class="string">"</span>;
|
||||
} <span class="literal">else</span> {
|
||||
validityString = <span class="string">"</span><span class="string">invalid</span><span class="string">"</span>;
|
||||
}
|
||||
|
||||
System.<span class="ST2">out</span>.println(<span class="string">"</span><span class="string">The credit card </span><span class="string">"</span> + userInput + <span class="string">"</span><span class="string"> is </span><span class="string">"</span> + validityString);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
</pre></body>
|
||||
</html>
|
||||
73
Semester 1/Assignments/MP4_CalebFontenot/build.xml
Normal file
73
Semester 1/Assignments/MP4_CalebFontenot/build.xml
Normal file
@@ -0,0 +1,73 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!-- You may freely edit this file. See commented blocks below for -->
|
||||
<!-- some examples of how to customize the build. -->
|
||||
<!-- (If you delete it and reopen the project it will be recreated.) -->
|
||||
<!-- By default, only the Clean and Build commands use this build script. -->
|
||||
<!-- Commands such as Run, Debug, and Test only use this build script if -->
|
||||
<!-- the Compile on Save feature is turned off for the project. -->
|
||||
<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
|
||||
<!-- in the project's Project Properties dialog box.-->
|
||||
<project name="MP4_CalebFontenot" default="default" basedir=".">
|
||||
<description>Builds, tests, and runs the project MP4_CalebFontenot.</description>
|
||||
<import file="nbproject/build-impl.xml"/>
|
||||
<!--
|
||||
|
||||
There exist several targets which are by default empty and which can be
|
||||
used for execution of your tasks. These targets are usually executed
|
||||
before and after some main targets. They are:
|
||||
|
||||
-pre-init: called before initialization of project properties
|
||||
-post-init: called after initialization of project properties
|
||||
-pre-compile: called before javac compilation
|
||||
-post-compile: called after javac compilation
|
||||
-pre-compile-single: called before javac compilation of single file
|
||||
-post-compile-single: called after javac compilation of single file
|
||||
-pre-compile-test: called before javac compilation of JUnit tests
|
||||
-post-compile-test: called after javac compilation of JUnit tests
|
||||
-pre-compile-test-single: called before javac compilation of single JUnit test
|
||||
-post-compile-test-single: called after javac compilation of single JUunit test
|
||||
-pre-jar: called before JAR building
|
||||
-post-jar: called after JAR building
|
||||
-post-clean: called after cleaning build products
|
||||
|
||||
(Targets beginning with '-' are not intended to be called on their own.)
|
||||
|
||||
Example of inserting an obfuscator after compilation could look like this:
|
||||
|
||||
<target name="-post-compile">
|
||||
<obfuscate>
|
||||
<fileset dir="${build.classes.dir}"/>
|
||||
</obfuscate>
|
||||
</target>
|
||||
|
||||
For list of available properties check the imported
|
||||
nbproject/build-impl.xml file.
|
||||
|
||||
|
||||
Another way to customize the build is by overriding existing main targets.
|
||||
The targets of interest are:
|
||||
|
||||
-init-macrodef-javac: defines macro for javac compilation
|
||||
-init-macrodef-junit: defines macro for junit execution
|
||||
-init-macrodef-debug: defines macro for class debugging
|
||||
-init-macrodef-java: defines macro for class execution
|
||||
-do-jar: JAR building
|
||||
run: execution of project
|
||||
-javadoc-build: Javadoc generation
|
||||
test-report: JUnit report generation
|
||||
|
||||
An example of overriding the target for project execution could look like this:
|
||||
|
||||
<target name="run" depends="MP4_CalebFontenot-impl.jar">
|
||||
<exec dir="bin" executable="launcher.exe">
|
||||
<arg file="${dist.jar}"/>
|
||||
</exec>
|
||||
</target>
|
||||
|
||||
Notice that the overridden target depends on the jar target and not only on
|
||||
the compile target as the regular run target does. Again, for a list of available
|
||||
properties which you can use, check the target you are overriding in the
|
||||
nbproject/build-impl.xml file.
|
||||
|
||||
-->
|
||||
</project>
|
||||
3
Semester 1/Assignments/MP4_CalebFontenot/manifest.mf
Normal file
3
Semester 1/Assignments/MP4_CalebFontenot/manifest.mf
Normal file
@@ -0,0 +1,3 @@
|
||||
Manifest-Version: 1.0
|
||||
X-COMMENT: Main-Class will be added automatically by build
|
||||
|
||||
BIN
Semester 1/Assignments/MP4_CalebFontenot/mp4-f22.pdf
Normal file
BIN
Semester 1/Assignments/MP4_CalebFontenot/mp4-f22.pdf
Normal file
Binary file not shown.
1771
Semester 1/Assignments/MP4_CalebFontenot/nbproject/build-impl.xml
Normal file
1771
Semester 1/Assignments/MP4_CalebFontenot/nbproject/build-impl.xml
Normal file
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,8 @@
|
||||
build.xml.data.CRC32=a89314ee
|
||||
build.xml.script.CRC32=65aa903c
|
||||
build.xml.stylesheet.CRC32=f85dc8f2@1.104.0.48
|
||||
# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
|
||||
# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
|
||||
nbproject/build-impl.xml.data.CRC32=a89314ee
|
||||
nbproject/build-impl.xml.script.CRC32=22fbeebc
|
||||
nbproject/build-impl.xml.stylesheet.CRC32=12e0a6c2@1.104.0.48
|
||||
@@ -0,0 +1,95 @@
|
||||
annotation.processing.enabled=true
|
||||
annotation.processing.enabled.in.editor=false
|
||||
annotation.processing.processor.options=
|
||||
annotation.processing.processors.list=
|
||||
annotation.processing.run.all.processors=true
|
||||
annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
|
||||
build.classes.dir=${build.dir}/classes
|
||||
build.classes.excludes=**/*.java,**/*.form
|
||||
# This directory is removed when the project is cleaned:
|
||||
build.dir=build
|
||||
build.generated.dir=${build.dir}/generated
|
||||
build.generated.sources.dir=${build.dir}/generated-sources
|
||||
# Only compile against the classpath explicitly listed here:
|
||||
build.sysclasspath=ignore
|
||||
build.test.classes.dir=${build.dir}/test/classes
|
||||
build.test.results.dir=${build.dir}/test/results
|
||||
# Uncomment to specify the preferred debugger connection transport:
|
||||
#debug.transport=dt_socket
|
||||
debug.classpath=\
|
||||
${run.classpath}
|
||||
debug.modulepath=\
|
||||
${run.modulepath}
|
||||
debug.test.classpath=\
|
||||
${run.test.classpath}
|
||||
debug.test.modulepath=\
|
||||
${run.test.modulepath}
|
||||
# Files in build.classes.dir which should be excluded from distribution jar
|
||||
dist.archive.excludes=
|
||||
# This directory is removed when the project is cleaned:
|
||||
dist.dir=dist
|
||||
dist.jar=${dist.dir}/MP4_CalebFontenot.jar
|
||||
dist.javadoc.dir=${dist.dir}/javadoc
|
||||
dist.jlink.dir=${dist.dir}/jlink
|
||||
dist.jlink.output=${dist.jlink.dir}/MP4_CalebFontenot
|
||||
excludes=
|
||||
includes=**
|
||||
jar.compress=false
|
||||
javac.classpath=
|
||||
# Space-separated list of extra javac options
|
||||
javac.compilerargs=
|
||||
javac.deprecation=false
|
||||
javac.external.vm=true
|
||||
javac.modulepath=
|
||||
javac.processormodulepath=
|
||||
javac.processorpath=\
|
||||
${javac.classpath}
|
||||
javac.source=1.8
|
||||
javac.target=1.8
|
||||
javac.test.classpath=\
|
||||
${javac.classpath}:\
|
||||
${build.classes.dir}
|
||||
javac.test.modulepath=\
|
||||
${javac.modulepath}
|
||||
javac.test.processorpath=\
|
||||
${javac.test.classpath}
|
||||
javadoc.additionalparam=
|
||||
javadoc.author=false
|
||||
javadoc.encoding=${source.encoding}
|
||||
javadoc.html5=false
|
||||
javadoc.noindex=false
|
||||
javadoc.nonavbar=false
|
||||
javadoc.notree=false
|
||||
javadoc.private=false
|
||||
javadoc.splitindex=true
|
||||
javadoc.use=true
|
||||
javadoc.version=false
|
||||
javadoc.windowtitle=
|
||||
# The jlink additional root modules to resolve
|
||||
jlink.additionalmodules=
|
||||
# The jlink additional command line parameters
|
||||
jlink.additionalparam=
|
||||
jlink.launcher=true
|
||||
jlink.launcher.name=MP4_CalebFontenot
|
||||
main.class=mp4_calebfontenot.MP4_CalebFontenot
|
||||
manifest.file=manifest.mf
|
||||
meta.inf.dir=${src.dir}/META-INF
|
||||
mkdist.disabled=false
|
||||
platform.active=default_platform
|
||||
run.classpath=\
|
||||
${javac.classpath}:\
|
||||
${build.classes.dir}
|
||||
# Space-separated list of JVM arguments used when running the project.
|
||||
# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
|
||||
# To set system properties for unit tests define test-sys-prop.name=value:
|
||||
run.jvmargs=
|
||||
run.modulepath=\
|
||||
${javac.modulepath}
|
||||
run.test.classpath=\
|
||||
${javac.test.classpath}:\
|
||||
${build.test.classes.dir}
|
||||
run.test.modulepath=\
|
||||
${javac.test.modulepath}
|
||||
source.encoding=UTF-8
|
||||
src.dir=src
|
||||
test.src.dir=test
|
||||
@@ -0,0 +1,15 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project xmlns="http://www.netbeans.org/ns/project/1">
|
||||
<type>org.netbeans.modules.java.j2seproject</type>
|
||||
<configuration>
|
||||
<data xmlns="http://www.netbeans.org/ns/j2se-project/3">
|
||||
<name>MP4_CalebFontenot</name>
|
||||
<source-roots>
|
||||
<root id="src.dir"/>
|
||||
</source-roots>
|
||||
<test-roots>
|
||||
<root id="test.src.dir"/>
|
||||
</test-roots>
|
||||
</data>
|
||||
</configuration>
|
||||
</project>
|
||||
@@ -0,0 +1,188 @@
|
||||
/*
|
||||
* To change this license header, choose License Headers in Project Properties.
|
||||
* To change this template file, choose Tools | Templates
|
||||
* and open the template in the editor.
|
||||
*/
|
||||
package mp4_calebfontenot;
|
||||
|
||||
import java.util.Scanner;
|
||||
|
||||
/**
|
||||
*
|
||||
* @author caleb
|
||||
*/
|
||||
public class MP4_CalebFontenot {
|
||||
|
||||
static boolean debug = false;
|
||||
// Yes, I know the debugger exists. This is just a bit easier imho
|
||||
|
||||
/**
|
||||
* If the result from Step 4 is divisible by 10, the card number is valid; otherwise, it is invalid. For example, the number 4388576018402626 is invalid, but the number 4388576018410707 is valid
|
||||
*
|
||||
* @param CreditCard
|
||||
* @return
|
||||
*/
|
||||
public static boolean isValid(String CreditCard) {
|
||||
int sumResult = MP4_CalebFontenot.sum(MP4_CalebFontenot.doubleDigitsAndSumSingleDigits(CreditCard), MP4_CalebFontenot.addOddNumbersFromRightToLeft(CreditCard));
|
||||
int divisionResult = sumResult % 10;
|
||||
if (debug) {
|
||||
System.out.println(sumResult + ", " + divisionResult);
|
||||
}
|
||||
if (divisionResult == 0) {
|
||||
return true;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Sum the results from Steps 1, 2 and Step 3. 37 + 38 = 75
|
||||
*
|
||||
* @param step1andSep2 result form step 1 and step 2
|
||||
* @param step3 result form step 3
|
||||
* @return
|
||||
*/
|
||||
public static int sum(int step1andStep2, int step3) {
|
||||
return step1andStep2 + step3;
|
||||
}
|
||||
|
||||
/**
|
||||
* Add all digits in the odd places from right to left in the card number. 6 + 6 + 0 + 8 + 0 + 7 + 8 + 3 = 38
|
||||
*
|
||||
* @param -creditCard the credit card number to be processed.
|
||||
* @return the sum of digits at odd position from right to left.
|
||||
*/
|
||||
public static int addOddNumbersFromRightToLeft(String creditCard) {
|
||||
if (debug) {
|
||||
System.out.println("Now executing addOddNumbersFromRightToLeft()");
|
||||
}
|
||||
// Iterate through string
|
||||
int creditCardLength = creditCard.length();
|
||||
int currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
|
||||
//System.out.println(creditCard.length());
|
||||
|
||||
for (int i = (creditCardLength - 1); i >= 0; i--) {
|
||||
currentDigit = Character.getNumericValue(creditCard.charAt(i)); // Parses current digit as an integer so we can do math on it
|
||||
if (currentDigit % 2 != 0) { // Is this number an odd number?
|
||||
sum += currentDigit;
|
||||
if (debug) {
|
||||
System.out.println(currentDigit);
|
||||
System.out.println("sum: " + sum);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sum;
|
||||
}
|
||||
|
||||
/**
|
||||
* Double every second digit from right to left. If doubling of a digit results in a two-digit number, add up the two digits to get a single-digit number. 2 * 2 = 4 2 * 2 = 4 4 * 2 = 8 1 * 2 = 2 6 * 2 = 12 (1 + 2 = 3) 5 * 2 = 10 (1 + 0 = 1) 8 * 2 = 16 (1 + 6 = 7) 4 * 2 = 8 Step 2 Now add all single-digit numbers from Step 1. 4 + 4 + 8 + 2 + 3 + 1 + 7 + 8 = 37
|
||||
*
|
||||
* @param -creditCard the credit card number to be processed.
|
||||
* @return
|
||||
*/
|
||||
public static int doubleDigitsAndSumSingleDigits(String creditCard) {
|
||||
if (debug) {
|
||||
System.out.println("Now executing doubleDigitsAndSumSingleDigits()");
|
||||
}
|
||||
// Iterate through string
|
||||
int creditCardLength = creditCard.length();
|
||||
int currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
|
||||
//System.out.println(creditCard.length());
|
||||
|
||||
for (int i = (creditCardLength - 1); i >= 0; i--) {
|
||||
if (i % 2 == 0) {
|
||||
currentDigit = Character.getNumericValue(creditCard.charAt(i)); // Parses current digit as an integer so we can do math on it
|
||||
if (debug) {
|
||||
System.out.println("current digit: " + currentDigit);
|
||||
}
|
||||
digitProduct = currentDigit * 2;
|
||||
if (digitProduct > 9) { // Product is larger than 9. Typecast the integer back into a string so we can seperate the digits and add them together.
|
||||
String workingString = Integer.toString(digitProduct);
|
||||
tensDigit = Character.getNumericValue(workingString.charAt(0));
|
||||
onesDigit = Character.getNumericValue(workingString.charAt(1));
|
||||
if (debug) {
|
||||
System.out.println("tensDigit is " + tensDigit);
|
||||
System.out.println("onesDigit is " + onesDigit);
|
||||
}
|
||||
digitProduct = (tensDigit + onesDigit);
|
||||
}
|
||||
sum += digitProduct;
|
||||
}
|
||||
|
||||
}
|
||||
if (debug) {
|
||||
System.out.println("The sum is: " + sum);
|
||||
}
|
||||
return sum;
|
||||
}
|
||||
|
||||
/**
|
||||
* Displays Q/q or C/c. If the user enters C, it read the credit number and returns it as String. If the user types Q/q returns 0
|
||||
*
|
||||
* @return a string with credit card number or 0.
|
||||
*/
|
||||
public static String menu() {
|
||||
String userInput = "";
|
||||
Scanner input = new Scanner(System.in);
|
||||
|
||||
while (!userInput.equals("0"))//user has not entered Q/q
|
||||
{
|
||||
System.out.println("Press Q/q to quit");
|
||||
System.out.println("Press C/c to enter a credit card");
|
||||
userInput = input.next();
|
||||
if (userInput.equalsIgnoreCase("q")) {
|
||||
userInput = "0";
|
||||
}
|
||||
if (userInput.equalsIgnoreCase("c")) {
|
||||
System.out.print("Please enter a credit card number: ");
|
||||
userInput = input.next();
|
||||
try { //Test to see if user has given us a string that looks like a credit card number
|
||||
//Does it sucessfully convert to an integer?
|
||||
Long.parseLong(userInput);
|
||||
|
||||
} catch(Exception e) {
|
||||
System.out.println("Invalid input: String doesn't look like a credit card, it failed successfully convert into an integer.");
|
||||
//break;
|
||||
}
|
||||
if (userInput.length() != 16) {
|
||||
System.out.println("Invalid input: String doesn't look like a credit card, incorrect length.");
|
||||
if (debug) {
|
||||
System.out.println("length: " + userInput.length());
|
||||
}
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
return userInput;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param args
|
||||
*/
|
||||
public static void main(String[] args) {
|
||||
|
||||
//String sampleCreditCard = "4388576018410707";
|
||||
String userInput = menu();
|
||||
if (userInput == "0") { // Stop program execution if credit card not entered
|
||||
System.out.println("Credit card not entered!");
|
||||
//System.exit(0);
|
||||
return;
|
||||
}
|
||||
|
||||
boolean creditCardValidity = MP4_CalebFontenot.isValid(userInput);
|
||||
String validityString;
|
||||
if (creditCardValidity) {
|
||||
validityString = "valid";
|
||||
} else {
|
||||
validityString = "invalid";
|
||||
}
|
||||
|
||||
System.out.println("The credit card " + userInput + " is " + validityString);
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user