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.
Credits:
Special thanks to @jianchao.li.fighter for adding this problem and creating all test cases.
1 public class Solution { 2 public void moveZeroes(int[] nums) { 3 int pos = 0; 4 for(int i =0; i< nums.length; i++){ 5 if(nums[i] != 0){ 6 nums[pos++] = nums[i]; 7 } 8 } 9 for(;pos< nums.length; pos ++) 10 nums[pos] = 0; 11 } 12 }
双指针压缩法。