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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 ...

In this video, we solve LeetCode Problem 217: Contains Duplicate, one of the most common array + hashing interview questions.

You put a value in a HashMap. You know it's there. But when you try to get it back… it's null. This isn't a Java bug. It's an equals() ...

In this video, we solve a common Java coding interview question: Find the First Repeating Character in a String using Java.

Google DSA Questio. Java DSA Dry Run | Longest Substring Problem #shorts Problem: Find the longest substring without ...

Java Program to Remove Duplicate Elements from a List In this video, we learn how to remove duplicate elements from a List in ...

In this video, we break down the Contains Duplicate problem, where the goal is to return true if any value appears more than once ...

In this video, we solve LeetCode Problem 217: Contains Duplicate, one of the most common array + hashing interview questions.

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

In this video, you will get NPTEL Programming In Java Week 1 Assignment Answers for the January–April 2026 session.

In this video, we solve the LeetCode problem “Remove Duplicates from Sorted Array” using a simple loop and if-condition ...

Erfahren Sie, wie Sie in Java 8 mit Streams effizient passende Objekte abrufen, indem Sie mit einer Liste von Codes filtern.

In this video, we solve LeetCode Problem 283: Move Zeroes, a classic array manipulation interview question. The goal is to move ...

In this video, we solve LeetCode Problem 169: Majority Element using the Boyer–Moore Voting Algorithm, the most optimal and ...

Learn how to solve the "Concatenated Words" problem efficiently using Depth First Search (DFS) and Memoization! In this ...

Learn how to solve the 'Longest Word in Dictionary' problem using a Trie (Prefix Tree)! In this video, we break down how to find ...

Learn how to solve the 'Number of Distinct Islands' problem efficiently! 🏝️ In this video, we break down a common coding ...