In this video, we solve LeetCode Problem #27 — Remove Element.
You’ll learn:
Two Pointer technique
In-place array operations
Optimized O(n) solution
Step-by-step dry run
Important interview edge cases
Problem Statement:
Given an integer array nums and an integer val, remove all occurrences of val in-place and return the number of remaining elements.
The order of elements may be changed.
Example:
Input: nums = [3,2,2,3], val = 3
Output: 2, nums = [2,2,,]
Input: nums = [0,1,2,2,3,0,4,2], val = 2
Output: 5
Topics Covered:
Arrays
Two Pointer Approach
In-place Modification
Interview Problem Solving
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LeetCode #27 Remove Element | Two Pointer Technique Explained | NatokHD