Move Zeroes

Given an arraynums, write a function to move all0'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:

1. You must do this in-place without making a copy of the array.

2. Minimize the total number of operations.

Solution

class Solution {
    public void moveZeroes(int[] nums) {
        int current = 0;
        int lastNotZeroIndex = 0;

        while (current < nums.length) {
            int num = nums[current];
            if (num != 0) {
                nums[current] = nums[lastNotZeroIndex];
                nums[lastNotZeroIndex] = num;    
                lastNotZeroIndex++;
            }

            current++;
        }
    }
}