Move Zeroes

Problem:

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.

Examples:

Given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [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.

Hints and Answer Checklist