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Complete MP4

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This commit is contained in:
Chloe Fontenot 🏳️‍⚧️ 2022-11-15 09:15:59 -06:00
parent 51cb2422fd
commit ef1576c36b
1 changed files with 54 additions and 47 deletions
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99
Assignments/MP4_CalebFontenot/src/mp4_calebfontenot/MP4_CalebFontenot.java
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@ -5,6 +5,8 @@
*/
package mp4_calebfontenot;
import java.util.Scanner;
/**
*
* @author caleb
@ -19,8 +21,7 @@ public class MP4_CalebFontenot {
* @param CreditCard
* @return
*/
public static boolean isValid(String CreditCard)
{
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) {
@ -40,8 +41,7 @@ public class MP4_CalebFontenot {
* @param step3 result form step 3
* @return
*/
public static int sum(int step1andStep2, int step3)
{
public static int sum(int step1andStep2, int step3) {
return step1andStep2 + step3;
}
@ -51,8 +51,7 @@ public class MP4_CalebFontenot {
* @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) {
if (debug) {
System.out.println("Now executing addOddNumbersFromRightToLeft()");
}
@ -61,7 +60,7 @@ public class MP4_CalebFontenot {
int currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
//System.out.println(creditCard.length());
for (int i = 0; i <= (creditCardLength - 1); i++) {
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;
@ -81,8 +80,7 @@ public class MP4_CalebFontenot {
* @param -creditCard the credit card number to be processed.
* @return
*/
public static int doubleDigitsAndSumSingleDigits(String creditCard)
{
public static int doubleDigitsAndSumSingleDigits(String creditCard) {
if (debug) {
System.out.println("Now executing doubleDigitsAndSumSingleDigits()");
}
@ -91,30 +89,30 @@ public class MP4_CalebFontenot {
int currentDigit, digitProduct, tensDigit, onesDigit, sum = 0;
//System.out.println(creditCard.length());
for (int i = 0; i <= (creditCardLength - 1); i++){
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);
}
if (currentDigit % 2 == 0) { //Is this number an even number?
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));
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("tensDigit is " + tensDigit);
System.out.println("onesDigit is " + onesDigit);
System.out.println("current digit: " + currentDigit);
}
digitProduct = (tensDigit + onesDigit);
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;
}
sum += digitProduct;
}
if (debug) {
System.out.println("The sum is: " + sum);
}
}
return sum;
}
@ -123,21 +121,42 @@ public class MP4_CalebFontenot {
*
* @return a string with credit card number or 0.
*/
public static String menu()
{
return "creditcard 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();
break;
}
}
return userInput;
}
/**
*
* @param args
*/
public static void main(String[] args)
{
// DEBUG
//System.out.println(isValid("4388576018402626"));
public static void main(String[] args) {
String sampleCreditCard = "4388576018410707";
boolean creditCardValidity = MP4_CalebFontenot.isValid(sampleCreditCard);
String userInput = menu();
if (userInput == "0") { // Stop program execution if credit card not entered
System.out.println("Credit card not entered!");
System.exit(0);
}
boolean creditCardValidity = MP4_CalebFontenot.isValid(userInput);
String validityString;
if (creditCardValidity) {
validityString = "valid";
@ -145,19 +164,7 @@ public class MP4_CalebFontenot {
validityString = "invalid";
}
System.out.println("The credit card " + sampleCreditCard + " is " + validityString);
/*
String userInput = menu();
while (!userInput.equals("0") )//user has not entered Q/q
{
MP4_CalebFontenot.doubleDigitsAndSumSingleDigits(userInput);
//complete the code
userInput = menu();
}
*/
System.out.println("The credit card " + userInput + " is " + validityString);
}
}