The “Print N to 1 without loop” problem on GeeksforGeeks challenges you to output the integers from N down to…
Author: Anirudh Khurana
Anirudh Khurana
Anirudh Khurana is the founder of Code and Debug, an Indian EdTech platform that helps students and working professionals crack coding interviews and move into data and AI roles. He teaches DSA, Python, SQL, data engineering and machine learning through live bootcamps and his YouTube channel, Code and Debug, which has over 50,000 subscribers. Every guide on this blog is written or reviewed by him and tested with real code.
The “Print N times with Recursion” problem on GeeksforGeeks asks you to output the string “GFG” exactly N times, using…
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.Formally,…
The LeetCode “4Sum” problem asks you to find all unique quadruplets in an integer array nums such that Key details:…
LeetCode #15 “3Sum” asks you to find all unique triplets (i, j, k) in an integer array such that The…
LeetCode “Spiral Matrix” (#54) asks you to return all the elements of an m × n matrix in clock-wise spiral…
LeetCode “Rotate Image” (#48) asks you to rotate an n × n square matrix 90° clockwise in-place (i.e., without returning…
If you’re preparing for coding interviews, the “Set Matrix Zeroes” problem is a must-know! In this blog, we’ll explain the…
Struggling with the “Longest Consecutive Sequence” problem on LeetCode? This blog will help you understand the problem, walk you through…
Are you struggling with the “Rearrange Array Elements by Sign” problem on LeetCode? Don’t worry! In this blog, we’ll break…