Competitive Programming Series — Session 2: Recursion and Backtracking
After covering the foundational building blocks in Session 1, the next step is one of the most important problem-solving techniques in all of programm…
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Competitive Programming Series — Session 1: The Foundations You Need Before Solving Problems
Competitive programming often looks like a race to write code as fast as possible. But the real secret is simpler: the best competitive programmers ar…
I Built Bit Flip to Make Coding Interview Practice Simpler
TLDR: I'm introducing Bit Flip, a newsletter where you get coding questions and interview questions asked by tech companies delivered to your inbox da…
How to actually learn data structures and algorithms
Most people learn data structures and algorithms the hard way: they open a problem site, sort by "most solved," and start grinding. A month later they…
DSA Alone Is No Longer Enough: Why Students Should Learn Beyond Coding Problems
For a long time, the standard advice for computer science students was simple: Learn a programming language, practice Data Structures and Algorithms, …
More Than LeetCode
As a third year student attending multiple internship drives and interviews, I started doubting my own worth ,is it all really confined to DSA? Does t…
Why Contraint is King
When tackling data structures and algorithms (DSA) problems, whether in technical interviews or competitive programming, engineers often overlook the …
LeetCode Solution: 3. Longest Substring Without Repeating Characters
3. Longest Substring Without Repeating Characters 🟡 Medium Hey Dev.to fam! 👋 Today, we're diving into a LeetCode classic that’s a fantastic introducti…
DS - while loop
Let's discuss about while loop. We need to print a particular value say 5 for 10 times. print(5) print(5) print(5) print(5) print(5) print(5) print(5)…
LeetCode Solution: 1. Two Sum
Your First LeetCode Journey: Conquering 'Two Sum' (Problem 1) with Ease! Hey fellow developers! 👋 Kushalx here, and today we're diving into the absolu…
LeetCode Solution: 1752. Check if Array Is Sorted and Rotated
🔄 LeetCode 1752: Can You Un-Rotate This Array? (A Beginner's Guide) Hey there, fellow coders! 👋 Vansh2710 here, ready to demystify another exciting Le…
Insertion Sort Explained Simply — Algorithm, Code & Examples
Insertion Sort is the algorithm Python's Timsort uses for arrays under 64 elements . Not just a teaching tool — it's in production in the world's most…
LeetCode Solution: 13. Roman to Integer
How to Conquer Roman Numerals: LeetCode #13 Explained Simply! Hey there, future coding superstar! 👋 Ever looked at Roman numerals and thought, "That's…
LeetCode Solution: 12. Integer to Roman
Unraveling the Mystery of Roman Numerals: A LeetCode Journey (Problem 12. Integer to Roman) Hey LeetCoders and aspiring developers! 👋 Today, we're tak…
Bubble Sort Explained Simply — Algorithm, Code & Complexity
Bubble Sort isn't used in production — but it's the best algorithm to learn sorting logic because every step is visible and intuitive. 🔹 The Idea Repe…
3 and 4 Sum optimized Approach
3 Sum problem(2 pointer approach) Here,I discussed classic problem of both 3 Sum and 4 Sum problem. 3 Sum Problem Problem Statement Find all unique tr…
Space Complexity Explained — Why Memory Matters in DSA
Fast code that crashes on 1 million inputs because it's eating all the RAM is still broken code. That's space complexity . ⚡ What is Space Complexity?…
LeetCode Solution: 146. LRU Cache
LRU Cache: Because Your Computer Has Commitment Issues (LeetCode 146) Hello, fellow coders and aspiring digital hoarders! Today, we're diving into a L…
Time Complexity & Big-O Notation Explained Simply
Handling 10 inputs is easy. Handling 10 lakh inputs is where real skill shows. That's what time complexity measures. ⚡ What is Time Complexity? It mea…
LeetCode Solution: 5. Longest Palindromic Substring
Longest Palindromic Substring: A Core String Algorithm Explained Welcome to another deep dive into a classic LeetCode problem! Today, we're tackling P…
Resolving deletion in AVL trees
Started solving for AVL (Adelson-Velsky and Landis, named after its inventors) trees, 3 week back but now i am finally done. For starters like me, got…
Arrays in Programming Explained Simply — DSA for Beginners
The array is the most fundamental data structure in programming. Almost every complex structure — stacks, queues, heaps — is built on top of arrays in…
What is a Data Structure? Explained Simply with Examples
A data structure is a way to organise, store, and manage data so you can use it efficiently. Without the right data structure, even simple programs be…
Leetcode 2
I did LeetCode 2. Yup. That’s the headline. The classic Add Two Numbers. Submitted my solution thanks to the tremendous help of ChatGPT, but I still f…
Programming Thinking Explained — The Real Foundation of DSA
Before you learn arrays, linked lists, or sorting algorithms — you need to learn how to think like a programmer . That's what this post is about. 🔍 Wh…