题目：

题解：

class Solution {     public void moveZeroes(int[] nums) {         int n = nums.length, left = 0, right = 0;         while (right < n) {             if (nums[right] != 0) {                 swap(nums, left, right);                 left++;             }             right++;         }     }      public void swap(int[] nums, int left, int right) {         int temp = nums[left];         nums[left] = nums[right];         nums[right] = temp;     } }