Скачать или смотреть LeetCode Problem of the Day | 961. N-Repeated Element in Size 2N Array | C++ Solution

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🚀 LeetCode Problem of the Day – January 2, 2026

In this video, we solve *LeetCode Problem 961: N-Repeated Element in Size 2N Array* using **C++**.
This is an **easy and frequently asked interview question**, perfect for beginners and interview preparation.

🔹 *Problem Statement*
You are given an integer array `nums` of size `2N`.
The array contains `N + 1` unique elements, where **exactly one element appears N times**.
Your task is to **find and return the element that is repeated N times**.

🔹 *Approach Used*
✔ Hash Map
✔ Early exit optimization
✔ Clean and readable C++ STL usage

🔹 *Complexity Analysis*
⏱ Time Complexity: *O(N)*
📦 Space Complexity: *O(N)*

🔹 *Why this problem is important?*
• Asked in real interviews
• Tests understanding of arrays and hashing
• Great warm-up LeetCode problem

🔗 *LeetCode Problem Link*
https://leetcode.com/problems/n-repea...

If you are practicing **LeetCode daily challenges**, preparing for **coding interviews**, or improving your **DSA skills**, this video is for you.

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