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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. public static void main (String[] args) throws java.lang.Exception
  11. {
  12. // your code goes here
  13. char[] str = "011".toCharArray(); // 100 -> 001
  14. int i = 0, j = str.length - 1;
  15. // System.out.println(Arrays.toString(str));
  16. while (i <= j) {
  17. char ch = str[i] == '1' ? '0' : '1';
  18. str[i] = str[j] == '1' ? '0' : '1';
  19. str[j] = ch;
  20. System.out.println(str[i] + " " + str[j] + " " +ch);
  21. i++;
  22. j--;
  23. }
  24. System.out.println(Arrays.toString(str));
  25. }
  26. }
Success #stdin #stdout 0.15s 52320KB
stdin
Standard input is empty
stdout
0 1 1
0 0 0
[0, 0, 1]