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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.  
  11. public static String reverse(String s) {
  12.     char[] array = s.toCharArray();
  13.     char tmp;
  14.     for(int i=array.length/2; i >= 0; i--) {
  15.         tmp = array[i];
  16.         array[i] = array[array.length-1-i];
  17.         array[array.length-1-i] = tmp;
  18.     }
  19.     return new String(array);
  20. }
  21.  
  22. public static String fixReverse(String s) {
  23.     char[] array = s.toCharArray();
  24.     char tmp;
  25.     for(int i=(array.length - 1) / 2; i >= 0; i--) {
  26.         tmp = array[i];
  27.         array[i] = array[array.length-1-i];
  28.         array[array.length-1-i] = tmp;
  29.     }
  30.     return new String(array);
  31. }
  32.  
  33. 	public static void main (String[] args) throws java.lang.Exception
  34. 	{
  35. 		System.out.println(reverse("Java"));
  36. 		System.out.println(fixReverse("Java"));
  37. 	}
  38. }
Success #stdin #stdout 0.04s 2184192KB
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aavJ
avaJ
https://ideone.com/H81ICt
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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