LeetCode #961 Explained with Animation | N-Repeated Element in Size 2N Array| POTD Of 02.01.2026

LeetCode #961 Explained | N-Repeated Element in Size 2N Array

In this video, we solve LeetCode Problem #961 – N-Repeated Element in Size 2N Array, a simple yet important array-based problem frequently asked in coding interviews.

The explanation focuses on understanding the problem pattern and identifying the element that appears exactly N times in an array of size 2N.

Problem Understanding

You are given an array of size 2N containing N + 1 unique elements.
Only one element is repeated exactly N times.
The task is to find and return that repeated element.

Approach Explained

Observe that the repeated element appears many times

It must appear close to itself somewhere in the array

By checking nearby elements, we can find the answer efficiently

This solution runs in O(n) time with O(1) extra space

What You Will Learn

How to identify repeating patterns in arrays

Why brute force is unnecessary for this problem

Optimized approach for interview scenarios

Time and space complexity analysis

Who Should Watch This Video

Beginners learning arrays

Students preparing for coding interviews

LeetCode practice for easy problems

Anyone revising basic DSA concepts

Source Code & DSA Resources

Complete DSA playlist with explanations:
https://github.com/sannikumar85/DSA_Playlist_by_Animation

Connect With Me

LinkedIn:
https://www.linkedin.com/in/sanni-kumar-gupta-10792b290/

Support the Channel

Like the video
Comment your approach
Subscribe for more LeetCode and DSA explanations

array transformation leetcode problems java
cracking the coding interview
leetcode in java
unique paths 2 detailed explanation
unique paths 2 leetcode explanation
leetcode fibonacci number explanation
leetcode unique paths 2 solution
dynamic programming
leetcode unique paths 2
unique paths 2 leetcode

#LeetCode
#LeetCode961
#ArrayProblem
#DSA
#CodingInterview

Видео LeetCode #961 Explained with Animation | N-Repeated Element in Size 2N Array| POTD Of 02.01.2026 канала Sgcode