Move Zeroes Python

Move Zeroes

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:

1. You must do this in-place without making a copy of the array.
2. Minimize the total number of operations.

// Two Pointer Technique 
// Slow pointer and fast pointer technique


class Solution:
    def moveZeroes(self, nums: List[int]) -> None:
        """        Do not return anything, modify nums in-place instead.        """        i, j = 0, 0        for i in range(0, len(nums)):
            if nums[i] != 0:
                nums[i], nums[j] = nums[j], nums[i]
                j += 1

Time Complexity : O(n)
Space Complexity : O(1)