问题:
Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.
For example, given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [1, 3, 12, 0, 0].
Note:
You must do this in-place without making a copy of the array.Minimize the total number of operations思路:两个指针,一个指向“0”,一个指向非“0”,从左向右,如果找到,则交换
代码:
public void moveZeroes(int[] nums) { int i = 0; int j = 0; while(j < nums.length){ if(nums[j] != 0){ if(j !=i ){ nums[i] = nums[j]; nums[j] = 0; i++; } else{ ++i; } } ++j; } }