#dsa-problem

Before We Compare Solutions, We Need a Way to Measure Them

Imagine two developers solving the same problem.

Big O Notation Explained for Beginners

While learning Data Structures in college, I found almost every concept easy to understand — except one: Big O notation.

Tower of Hanoi Explained for Beginners

If you’ve just started learning recursion, you’ve probably come across the Tower of Hanoi problem. At first glance, it looks confusing…

Two Sum, Three Sum, Four Sum: It’s All the Same Trick

There’s really only one idea behind this entire family: find numbers whose sum equals a target by asking “have I seen the complement…

How a LeetCode Problem Kept Me Awake at 1:00 am 🫠

I Spent 30 Minutes Looking for a Trick That Didn’t Exist

Sometimes while solving DSA problems, I feel my brain has its own algorithm.

Google SDE-2 Interview Experience

A practical breakdown of LinkedIn’s software engineer interview rounds, how to prepare for DSA, CS fundamentals, HLD, and managerial…

Minimum Platforms

In this blog:

from watching tutorials to building systems

Hi, I am Amna , 21 year old likes binge watching videos , don’t know the purpose of my life. Sometimes, development, chess , calligraphy…

Quick Learning Path for DSA Rotten Oranges 🍊

I’ll teach you the Rotten Oranges problem from scratch . Imagine you have a grid of oranges. Some are already rotten. Every minute, rotten…

My SQL Engine Finally Started Planning Queries | Stage 4

We’re back again.

The Most Expensive Line of Code Is the One You Didn’t Delete

As software engineers, we’re often rewarded for building things.

LeetCode Finally Has an Official Mobile App

For years, many developers kept asking the same question:

Song Popularity Ranking

This is a data structure problem asked in online assessment for intern role at a MNC.

The Sorting Algorithm Nobody Taught You — And Why It Might Change How You Think About Order

You’ve been sorting things since your first CS class. Bubble sort. Merge sort. Quick sort. You memorized the Big-O, aced the interview…

Complete Guide on DSU/ Union Find

If you’ve spent any time solving graph problems in competitive programming, you’ve probably encountered situations where you need to…

Day n+1 of studying to get a new job

Today, I decided to solve an easy problem at the end of the day from stacks since I was exhausted after a long day. Here goes the question:

C++ STL for DSA

When I started learning Data Structures and Algorithms in C++, everything felt nicely ordered.

Shortest path in unweighted Graph

Why the Parent Array Matters in Shortest Path Problems

Euclid’s Algorithm for Greatest Common Divisor ON STRINGS.

Application of Euclid’s Algorithm for Greatest Common Divisor on solving string problems — number theory touching strings!

Manacher’s Algorithm

Manacher’s algorithm didn’t arrive as a friendly lecture or a neat diagram. It arrived as a stubborn bug, a time-limit exceeded error, and…

My SDE Interview That Taught Me Why DSA Still Matters (Day 1)

Position: SDE Intern

The Sliding Window Trick: A Simple Way to Maximize Frequency

A step-by-step guide to solving a tricky array problem with an elegant and efficient approach.

Started My DSA Journey for Better Career

Hi , So lately I have been working on to improve my DSA skills ,but I lack consistency. So not saying much here is this blog post for the…

Reversing an Array — Extra Space vs. In-Place

Two Ways I Solved the Same Problem

From Brute to Optimal: Minimizing Difference After Removals (Heap + Prefix-Suffix Optimization)

In this post, I’ll walk you through a real case where I started with a brute-force-ish solution and iteratively optimized it for both space…

Mini-Max Algorithm in Artificial Intelligence

The Minimax algorithm is a decision-making algorithm used in two-player, turn-based games, such as Chess, Tic Tac Toe, and Pai Sho, where…

GCD in JAVA and

Euclidean Algorithmtion:

Reverse an Array in C++ — Efficient Array Reversal Algorithm

Learn how to reverse an array in C++ using a simple algorithm. This post covers reversing an array with code, edge cases.