Move Zeroes

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 <= 10^4

-2^31 <= nums[i] <= 2^31 - 1

Solution in JavaScript

var moveZeroes = function(nums) {
    let index = 0;
        for(let i=0; i<nums.length; i++){
            if(nums[i] != 0){
                nums[index++] = nums[i];
            }
        }
        
        for(let i = index; i<nums.length; i++){
            nums[i] = 0;
        }
};