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This commit is contained in:
Chloe Fontenot 🏳️‍⚧️ 2022-11-11 13:01:30 -06:00
parent 3476dd253a
commit 9efb4636e8
2 changed files with 43 additions and 33 deletions
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2
.gitignore vendored
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@ -35,3 +35,5 @@
/Assignments/MP4_CalebFontenot/nbproject/private/
/Assignments/lab14_CalebFontenot/nbproject/private/
/Assignments/lab14_CalebFontenot/build/
/Assignments/MP4_CalebFontenot/build/
/Assignments/MP4_CalebFontenot/dist/

74
Assignments/MP4_CalebFontenot/src/mp4_calebfontenot/MP4_CalebFontenot.java
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@ -9,19 +9,16 @@ package mp4_calebfontenot;
*
* @author caleb
*/
public class MP4_CalebFontenot
{
public class MP4_CalebFontenot {
/**
* 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
* 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)
{
public static boolean isValid(String CreditCard) {
return true;
}
@ -32,64 +29,75 @@ public class MP4_CalebFontenot
* @param step3 result form step 3
* @return
*/
public static int sum(int step1andSep2, int step3)
{
public static int sum(int step1andSep2, int step3) {
return step1andSep2 + 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
* 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)
{
public static int addOddNumbersFromRightToLeft(String creditCard) {
return -1;
}
/**
* 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
* 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)
{
public static int doubleDigitsAndSumSingleDigits(String creditCard) {
// Iterate through string
int creditCardLength = creditCard.length();
int currentDigit, digitProduct, tensDigit, onesDigit;
//System.out.println(creditCard.length());
for (int i = 15; i >= 0; i = i - 2) {
currentDigit = Character.getNumericValue(creditCard.charAt(i)); // Parses current digit as an integer so we can do math on it
digitProduct = currentDigit * 2;
System.out.println(digitProduct);
if (digitProduct > 9) { // Product is larger than 9
tensDigit = currentDigit / 10 % 10;
onesDigit = currentDigit / 1 % 10;
System.out.println("tensDigit is " + tensDigit);
System.out.println("onesDigit is " + onesDigit);
}
}
return -1;
}
/**
* 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
* 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()
{
public static String menu() {
return "creditcard number or 0";
}
/**
*
* @param args
*/
public static void main(String[] args)
{
/**
*
* @param args
*/
public static void main(String[] args) {
// DEBUG
//System.out.println(isValid("4388576018402626"));
MP4_CalebFontenot.doubleDigitsAndSumSingleDigits("4388576018402626");
/*
String userInput = menu();
while (!userInput.equals("0") )//user has not entered Q/q
{
MP4.doubleDigitsAndSumSingleDigits(userInput);
MP4_CalebFontenot.doubleDigitsAndSumSingleDigits(userInput);
//complete the code
userInput = menu();
}
*/
}
}