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HackerRank Roads and Libraries Problem Solution in C++ | DFS Approach Explained

OJ Solutions | Aug. 19, 2025, 5:38 p.m.

Problem Overview The HackerRank Roads and Libraries problem is a classic graph problem where we need to build libraries and/or repair roads in a city to ensure that every citizen

Even Tree HackerRank Problem Solution in C++ with Step-by-Step Explanation

OJ Solutions | Aug. 19, 2025, 4:33 p.m.

Problem Overview The HackerRank Even Tree problem is a classic graph and tree problem that asks us to maximize the number of edges we can remove from a tree while

LeetCode 172 Factorial Trailing Zeroes Solution – C++ Implementation and Explanation

OJ Solutions | Aug. 16, 2025, 5:23 p.m.

Problem Overview In LeetCode 172: Factorial Trailing Zeroes, we are asked to find the number of trailing zeros in a factorial of a given number n. This problem is a

LeetCode 3163 String Compression III Solution – C++ Implementation and Explanation

OJ Solutions | Aug. 14, 2025, 6:15 p.m.

Problem Overview In LeetCode 3163: String Compression III, we are asked to compress a string by replacing consecutive repeated characters with a count followed by the character. One important detail

LeetCode 185 Department Top Three Salaries Solution – SQL Query Explained

OJ Solutions | Aug. 14, 2025, 5:46 p.m.

Problem Overview LeetCode 185: Department Top Three Salaries asks us to find the employees who earn one of the top three highest distinct salaries in each department. We are given

Why Learning Go (Golang) in 2025 Is a Smart Move: A Beginner’s Guide to the Future of Programming

Tech Trends | April 12, 2025, 7:19 p.m.

Introduction As someone who’s been exploring modern development trends, I’ve realized that picking the right programming language can make a big difference—not just in how fast you build, but how

Python vs Java in 2025: Which Language Should Beginners Learn First and Why?

Tech Trends | April 12, 2025, 7:15 p.m.

Introduction In today’s fast-changing tech world, coding has gone from a niche skill to something almost everyone needs. Whether you’re starting your tech career, planning to launch a startup, or