LeetCode 1: Two Sum | Java Solution Using HashMap
Автор: codewithamod
Загружено: 2025-11-13
Просмотров: 53
In this video, we solve LeetCode Problem 1 – Two Sum using a HashMap in Java.
Learn how to efficiently find two numbers in an array that add up to a given target in O(n) time complexity.
What you’ll learn:
Understanding the Two Sum problem
Using a HashMap to store and lookup complements
Writing clean and efficient Java code
Code walkthrough included step-by-step!
Time Complexity: O(n)
Space Complexity: O(n)
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