Move Zeroes - Efficient Solution Python | Telugu
In this problem, you are given an array of integers, and your task is to move all the zeroes to the end of the array while maintaining the relative order of the non-zero elements. The challenge lies in doing this in an optimal manner, with a time complexity of O(n) and a space complexity of O(1).
Problem Overview:
You need to shift all zero elements in the array to the end without altering the relative order of the non-zero elements.
You cannot use extra space for another array, meaning the solution must be done in-place.
Example:
Input:
[0, 1, 2, 0, 3, 4, 0]
Output:
[1, 2, 3, 4, 0, 0, 0]
Approach:
Iterate through the array with two pointers: one for iterating through the array and another for placing non-zero elements in their correct position.
When encountering a non-zero element, swap it with the element at the pointer for non-zero positions.
This approach ensures that zeroes are moved to the end while maintaining the relative order of non-zero elements.
Constraints:
Time Complexity: O(n) (Where n is the size of the array)
Space Complexity: O(1) (Only constant extra space is allowed)
Edge Cases:
If the array is already without zeroes, return the array unchanged.
If the array contains only zeroes, the result should still have all zeroes at the end.
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