LeetCode Problem 80: Remove Duplicates from Sorted Array II | Efficient Solution Explained
Welcome to another coding tutorial! In this video, we'll tackle LeetCode Problem 80: 'Remove Duplicates from Sorted Array II'. This problem is categorized as medium and involves modifying a sorted array to ensure that each element appears at most twice.
🔹 Problem Statement:
Given a sorted array nums, remove the duplicates in-place such that each element appears at most twice and return the new length. Do not allocate extra space for another array; you must do this by modifying the input array in-place with O(1) extra memory.
🔹 Example:
Input: nums = [1, 1, 1, 2, 2, 3]
Output: 5, nums = [1, 1, 2, 2, 3, _]
In this video, we'll:
Discuss the problem statement and constraints.
Walk through a step-by-step approach to solve the problem using the two-pointer technique.
Implement the solution in Java.
Test the solution with sample inputs.
Useful Links:
LeetCode Problem: Remove Duplicates from Sorted Array II
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