class Solution {public void moveZeroes(int[] nums) {int l = 0;//慢指针但先走for (int r = 0; r < nums.length; r++) {//快指针，遍历次数if (nums[r] == 0) continue;//l比r先到，在此处定住l，r继续移动int t = nums[l];nums[l] = nums[r];nums[r] = t;l++;}}
}