Java [Leetcode 283]Move Zeroes

题目描述：

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.

解题思路：

将数组中的非零数字往前压缩，剩余的位置补零。

代码如下：

public class Solution {
public void moveZeroes(int[] nums) {
int pos = 0;
for(int i = 0; i < nums.length; i++){
if(nums[i] != 0){
nums[pos++] = nums[i];
}
}
for(; pos < nums.length; pos++)
nums[pos] = 0;
}
}