Move Zeroes LeetCode Solution

Problem – Move Zeroes LeetCode Solution

Given an integer array nums, move all 0‘s to the end of it while maintaining the relative order of the non-zero elements.

Note that you must do this in-place without making a copy of the array.

Example 1:

Input: nums = [0,1,0,3,12]
Output: [1,3,12,0,0]

Example 2:

Input: nums = [0]
Output: [0]

Constraints:

  • 1 <= nums.length <= 104
  • -231 <= nums[i] <= 231 - 1

Move Zeroes LeetCode Solution in Java

class Solution {
     public void moveZeroes(int[] nums) {
        int snowBallSize = 0; 
        for (int i=0;i<nums.length;i++){
	        if (nums[i]==0){
                snowBallSize++; 
            }
            else if (snowBallSize > 0) {
	            int t = nums[i];
	            nums[i]=0;
	            nums[i-snowBallSize]=t;
            }
        }
    }
}

Move Zeroes LeetCode Solution in C++

class Solution {
public:
    void moveZeroes(vector<int>& nums) {
        int j = 0;
        // move all the nonzero elements advance
        for (int i = 0; i < nums.size(); i++) {
            if (nums[i] != 0) {
                nums[j++] = nums[i];
            }
        }
        for (;j < nums.size(); j++) {
            nums[j] = 0;
        }
    }
};

Move Zeroes LeetCode Solution in Python

# in-place
def moveZeroes(self, nums):
    zero = 0  # records the position of "0"
    for i in xrange(len(nums)):
        if nums[i] != 0:
            nums[i], nums[zero] = nums[zero], nums[i]
            zero += 1
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