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.
- An array of integers
nums.
- The modified array
nums.
- 1 <= nums.length <= 10^4
- -2^31 <= nums[i] <= 2^31 - 1
Input: nums = [0, 1, 0, 3, 12]
Output: [1, 3, 12, 0, 0]