In this video, we solve the Pythagorean Triplet problem from GeeksforGeeks (GFG) using Java.
We walk through the logic step-by-step and implement an efficient solution using a HashSet to check whether any three numbers in the array satisfy the condition:
a² + b² = c²
What you will learn in this video
• Understanding the Pythagorean Triplet problem
• How to optimize the solution using HashSet
• Writing clean Java DSA code
• Time complexity analysis of the approach
This type of problem is frequently asked in coding interviews and DSA practice platforms like GeeksforGeeks and LeetCode.
Code Approach
Store squares of all numbers in a HashSet
Pick two numbers from the array
Check if their square sum exists in the set
If it exists → Pythagorean triplet found
Perfect for
• DSA beginners
• Java programmers
• Coding interview preparation
• GeeksforGeeks practice problems
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