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.

Example:

Input: [0,1,0,3,12]
Output: [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.

/**
 * @param {number[]} nums
 * @return {void} Do not return anything, modify nums in-place instead.
 */
var moveZeroes = function(nums) {
    for (var i = 0, j = 0; i < nums.length; ++i) {
        if (nums[i] !== 0) {
            var temp = nums[i];
            nums[i] = nums[j];
            nums[j]= temp;
            ++j;            
        }
    }
};