So basically, I have to write a program that prompt 4 digit number in one dialog

Question

So basically, I have to write a program that prompt 4 digit number in one dialog box to encrypt the numbers. encryptions are following. Add 7 to each digit and then , swap 1st and 3rd digit, swap 2nd and 4th digit. display it in console box. Application should use loops to implement the algorithm So here is my encrypt code. import javax.swing.JOptionPane; public class Encryption { public static void main(String[] args) { String inputString; int num, digit1, digit2, digit3, digit4, encrypt; do { inputString = JOptionPane.showInputDialog("Please enter 4 digit numbers"); num = Integer.parseInt(inputString); } while(num/1000 == 0 || num/10000 != 0); digit1 = num/1000; digit2 = num/100; digit3 = num/10; digit4 = num/1; digit1 = (digit1+7); digit2 = (digit2+7); digit3 = (digit3+7); digit4 = (digit4+7); encrypt = digit1; digit1 = digit3; digit3 = encrypt; encrypt = digit2; digit2 = digit4; digit4 = encrypt; System.out.println("Your encrypted codes are: " + digit1 + digit2 + digit3 + digit4); } }

Explanation / Answer

import javax.swing.JOptionPane; public class Decryption { public static void main(String[] args) { String inputString; int num, digit1, digit2, digit3, digit4, decrypt; do { inputString = JOptionPane.showInputDialog("Please enter 4 digit numbers"); num = Integer.parseInt(inputString); } while(num/1000 == 0 || num/10000 != 0); digit1 = num/1000; digit2 = num/100%10; digit3 = num/10%10; digit4 = num%10; if(digit1 = 0) digit1 = digit1 + 10; if(digit2 = 0) digit2 = digit2 + 10; if(digit3 = 0) digit3 = digit3 + 10; if(digit4 = 0) digit4 = digit4 + 10; digit1 = digit1 - 7; digit2 = digit2 - 7; digit3 = digit3 - 7; digit4 = digit4 - 7; decrypt = digit1; digit1 = digit3; digit3 = decrypt; decrypt = digit2; digit2 = digit4; digit4 = decrypt; System.out.println("Your encrypted codes are: " + digit1 + digit2 + digit3 + digit4); } }

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.