Monday 19 September 2011

Reverse Number using Java

Reverse Number using Java

  1. /*
  2.   Reverse Number using Java
  3.   This Java Reverse Number Example shows how to reverse a given number.
  4. */
  5.  
  6. public class ReverseNumber {
  7.  
  8. public static void main(String[] args) {
  9.  
  10. //original number
  11. int number = 1234;
  12. int reversedNumber = 0;
  13. int temp = 0;
  14.  
  15. while(number > 0){
  16.  
  17. //use modulus operator to strip off the last digit
  18. temp = number%10;
  19.  
  20. //create the reversed number
  21. reversedNumber = reversedNumber * 10 + temp;
  22. number = number/10;
  23.  
  24. }
  25.  
  26. //output the reversed number
  27. System.out.println("Reversed Number is: " + reversedNumber);
  28. }
  29. }
  30.  
  31. /*
  32. Output of this Number Reverse program would be
  33. Reversed Number is: 4321
  34. */

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