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HashSet in Java stores unique elements and does not maintain order In this video, learn how HashSet works and when to use ...

Crushed LeetCode #217 Contains Duplicate today! Super common interview starter. Why HashSet? Brute O(n²) TLEs → O(1) ...

HashSet collection in java.

Short Professional Description Learn how to solve LeetCode 961 – N-Repeated Element in Size 2N Array with a clear explanation ...

961 N-Repeated Element in Size 2N Array. Key Insight: Track numbers you've seen. First duplicate = answer. How It Works 1.

In this video, I solve LeetCode 961 – N-Repeated Element in Size 2N Array using a HashSet approach in Java. You'll learn: What ...

In this video, we solve the Longest Substring Without Repeating Characters problem using Java. Given a string like abcabcdabc, ...

In this video of code decode we have explained most asked java tricky interview questions which developers fails to answers ...

Welcome to Day 3 of my 100 Days DSA Challenge In this video, I have explained the Contains Duplicate problem from ...

In this video, we will explore a clever HashSet trick that can be used to solve the LeetCode 217 Contains Duplicate problem ...

Preparing for Java interviews or need a quick revision? This video explains the Java Ultimate Cheat Sheet, covering core Java ...

Problem Overview In LeetCode 47 (Permutations II), we're asked to generate all unique permutations of an array that may contain ...

Given an array of integers arr[] and a number k. Return the maximum sum of a subarray of size k. Note: A subarray is a contiguous ...

Confused about Set Interface in Java? This short explains the Java Set Interface in a simple way with interview perspective.

Se você sempre se confunde entre List, Set e Map em Java, esse vídeo vai resolver isso de uma vez por todas. Aqui eu explico ...

Java Program to Find Duplicate Elements in Array | Full Explanation In this video, we learn how to find duplicate elements in an ...

Learn how to solve the Happy Number problem (LeetCode 202) efficiently! In this video, we break down the logic behind ...

Struggling with LeetCode 961? This video explains the N-Repeated Element in Size 2N Array problem using simple intuition, ...

Whatsapp Community Link : https://www.whatsapp.com/channel/0029Va6kVSjICVfiVdsHgi1A This is the 128th Video of our Playlist ...

Learn how to solve the 'Contains Duplicate' coding interview problem efficiently using Hash Sets! In this video, we break down ...

Neetcode 150 | Contains Duplicate | Complete DSA Series In this video, we solve the LeetCode problem Contains Duplicate ...

If you are preparing for coding interviews, you cannot skip the Sliding Window technique. It appears in almost every DSA round!

🎥 Welcome to our first live class of the "Basic Java to Advanced Spring Boot Backend Development Course"! In this session ...

Learn how to efficiently find all missing numbers in an array [1, n] using the Index Marking technique! In this video, we break ...

In this video, we solve LeetCode 961 — N-Repeated Element in Size 2N Array using two different approaches. Code: https ...