283. 移动零

  1. class Solution {
  2.     public void moveZeroes(int[] nums) {
  3.         if (nums == null || nums.length == 0)
  4.             return;
  6.         int i = 0, j = 0;
  7.         int len = nums.length;
  8.         while(i < len && j < len) {
  9.             if (nums[j] != 0) 
  10.                 nums[i++] = nums[j++];
  11.             else 
  12.                 ++j;
  13.         }
  15.         for (j = i; j < len; j++)
  16.             nums[j] = 0;
  18.         return;
  19.     }
  20. }