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Aug 1st, 2015
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  1. public class Solution {
  2. public void sortColors(int[] nums) {
  3. int l = 0;
  4. int r = nums.length - 1;
  5. int i = 0;
  6. while (i <= r) {
  7. if (nums[i] == 0) {
  8. nums[i] = nums[l];
  9. nums[l] = 0;
  10. l++;
  11. i++;
  12. } else if (nums[i] == 2) {
  13. nums[i] = nums[r];
  14. nums[r] = 2;
  15. r--;
  16. } else {
  17. i++;
  18. }
  19. }
  20. }
  21. }
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