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GGunjangunjantech.hashnode.devJun 21 · 3 min read

My Journey of Learning DSA as a First-Year Computer Science Student

My Journey of Learning DSA and Building Consistency As a first-year Computer Science student, I was exposed to many different suggestions about what I should do in college. Before my college started,

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SBSimran Balisimranbali-dsa.hashnode.devJun 16 · 6 min read

LC 41. First Missing Integer (Hard)

Problem Statement Given an unsorted integer array A, return the smallest missing positive integer. You must implement an algorithm that runs in O(n) time and uses O(1) auxiliary space. Example 1 I

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MSMuppidi Srinivassrinivastechblog.hashnode.devFeb 23 · 11 min read

Mastering Fenwick Tree for Competitive Programming

While reading, don’t overthink or get stuck. Just follow along with the flow—you’ll understand everything step by step as we go. Given ArrayIndex : 0 1 2 3 4 5 6Array : 3 2

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ARAman Rajblogs.amanraj.meJan 11 · 5 min read

How to Learn DSA Fast Without Solving 1000 LeetCode Problems

Learning Data Structures and Algorithms (DSA) fast is not about grinding endless problems. It is about building repeatable problem-solving patterns, training your brain to reason under pressure, and developing mastery in one programming language so y...

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AKAlok kumar Dascodebyalok24.hashnode.devOct 2, 2025 · 5 min read

Is Dsa Enough for Placement ?

Did you know 80% of coders never optimize their data structures properly, costing companies millions every year? While this might sound dramatic, the reality is that inefficient algorithms and poor data structure choices compound across codebases, le...

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PKPiyush Kumargrindwithpiyush.hashnode.devMay 26, 2025 · 2 min read

🧠 Day 6 of My #90DaysOfDSA Challenge: Palindromes and Sliding Windows!

📅 Date: May 26, 2025🏷️ Tags: DSA, Python, LeetCode, Sliding Window, HashMap 👋 Hello Devs! Welcome back to my #90DaysOfDSA journey. On Day 6, I focused on solving problems that involve string pairing and sliding window techniques — both of which a...

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CRCharan Rblog.charanravi.comApr 8, 2025 · 1 min read

Valid Anagram

Problem Given two strings s and t, return true if t is an anagram of s, and false otherwise. Click Here to read the entire problem. Approach What he heck is an anagram? cat and tac are words that have been rearranged using the same alphabets. Now tha...

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SSSingaraju Saitejasingarajusaiteja.hashnode.devMar 5, 2025 · 13 min read

Enough Data Structures and Algorithms to crack interviews, in simple words

Think of DSA like your toolbox for problem-solving. You have different tools for different jobs. DSA helps you organize data and solve problems efficiently, especially when dealing with large amounts of data. Why is DSA important for interviews? Pro...

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SSSingaraju Saitejasingarajusaiteja.hashnode.devMar 3, 2025 · 15 min read