Master DSA Like a Pro
Your complete roadmap to Data Structures & Algorithms — curated sheets, must-do LeetCode problems, and battle-tested tips from top coders.
Step-by-Step Roadmap
Follow this order for the most efficient learning path. Each step builds on the previous one.
Arrays & Strings
40 problemsMaster basic operations, two pointer, sliding window
Hashing & Maps
25 problemsFrequency counts, anagram problems, pair sums
Linked Lists
20 problemsReversal, cycle detection, merge operations
Stacks & Queues
22 problemsMonotonic stacks, next greater element, BFS basics
Trees & BST
35 problemsTraversals, LCA, height/depth, balanced trees
Recursion & Backtracking
28 problemsSubsets, permutations, N-Queens, Sudoku solver
Dynamic Programming
45 problemsLIS, knapsack, grid paths, DP on strings
Graphs
38 problemsBFS, DFS, Dijkstra, topological sort, union-find
Greedy & Binary Search
30 problemsInterval scheduling, search space reduction
Advanced Topics
25 problemsTries, segment trees, bit manipulation, math
Popular DSA Sheets
Handpicked problem lists that helped thousands crack FAANG and top product companies.
LeetCode Essentials
18 handpicked problems that cover the most important patterns. Solve these and you're interview-ready.
Tips to Crack DSA
Battle-tested advice from developers who cracked FAANG and top startups.
Be Consistent, Not Fast
Solve 2-3 problems daily instead of 20 in one day. Consistency builds pattern recognition over time.
Learn Patterns, Not Solutions
Don't memorize solutions. Understand patterns like sliding window, two pointers, BFS/DFS — they repeat everywhere.
Time Yourself
Give yourself 25-30 mins per problem. If stuck, read hints. After 45 mins, look at the editorial — no shame in learning.
Dry Run Before Coding
Trace through your approach with a small example on paper before writing code. Saves debugging time.
Topic-wise → Mixed Practice
Start with topic-wise practice to learn. Then switch to random/mixed problems to simulate real interviews.
Revise Solved Problems
Re-solve problems after 7 days. Spaced repetition is the key to long-term retention. Keep a log of your mistakes.
Must-Have Extensions
Supercharge your VS Code for DSA and competitive programming. Install these and code like a pro.
Quick Install Tip
Press Ctrl+Shift+X in VS Code, search the extension name, and click Install. Done! ⚡
Ready to start grinding?
Pick a roadmap, choose a sheet, and start solving. Consistency is the secret. You've got this! 🚀
All external links open in a new tab. Problems and sheets are curated from publicly available resources. SquadSync is not affiliated with LeetCode, TakeUForward, or any listed platform.