Given an integer array nums, move all 0's to the end of it while maintaining the relative order of the non-zero elements.
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]
Explanation: All zeroes are moved to the end while 1, 3, and 12 maintain their original relative order.
Example 2:
Input: nums = [0]
Output: [0]
Explanation: The array has only one element, which is already a zero at the end.
Example 3:
Input: nums = [1,2,3]
Output: [1,2,3]
Explanation: There are no zeroes, so the array remains unchanged.
1 <= nums.length <= 10⁴-2³¹ <= nums[i] <= 2³¹ - 1