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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.

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 ...

LinkedHashSet collection in java 16.

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 ...

In this coding tutorial, we dive deep into the 'Find the Duplicate Number' problem, a popular question in technical interviews at top ...

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 ...

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

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

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

In this video, I explain how Java HashSet works internally and why it is built on top of HashMap. You will learn: • What a HashSet ...

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

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

Learn how to efficiently solve the 'Subarray with Zero Sum' problem using the Prefix Sum and Hashing technique! In this video ...

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

Core Java Concepts Revision | 2 Jan – 4 Jan | Preparation** In this video, I've revised all the **important Core Java concepts** ...

Learn how to efficiently solve the 'Valid Sudoku' problem, a popular question in coding interviews! In this video, we break down ...