15. Bonus: Wrap-Up & Resources

Final Wrap-Up

Congratulations on completing the 150-day MAANG roadmap! Here's what you've mastered:

DSA: Arrays, Strings, Linked Lists, Stacks, Queues, Trees, Graphs, DP, Greedy, Backtracking
System Design: Rate Limiter, Parking Lot, Amazon Shopping, Uber, Twitter, YouTube, Google Drive
OOD: ATM, Airline, Restaurant, Chess, Ticketmaster, LinkedIn, Facebook
Behavioral: STAR stories, Leadership Principles, Conflict Resolution, Initiative

Next Steps

Mock Interviews — Practice on Pramp, Interviewing.io, or with a friend
Company-Specific Prep — Review recent problems from your target company on LeetCode Discuss
Apply — Referrals > direct applications. Use LinkedIn and Blind
Negotiate — Know your worth. Levels.fyi for compensation benchmarks

Quick Guide

Topic	Key Pattern	Common Mistakes
Arrays	Hash maps, two pointers	Off-by-one, edge cases (empty, single)
Strings	Sliding window, character maps	Case sensitivity, non-alphanumeric
Linked Lists	Dummy node, two pointers	Null pointer, cycle detection
Trees	Recursion, stack for iterative	Base case, depth limit
DP	Top-down (memo) vs bottom-up (tab)	Wrong recurrence relation
Graphs	BFS for shortest path, DFS for connectivity	Visited set, infinite loops
System Design	Estimate → Define API → Data model → Architecture → Scale	Missing non-functional reqs

Useful Resources

LeetCode — Problem solving, discuss, mock interviews
NeetCode.io — Pattern-based roadmap, videos
Grokking the Coding Interview — Course for patterns
Designing Data-Intensive Applications — Book for system design
Levels.fyi — Salary benchmarks
Blind — Anonymous career discussions

✏️ Exercise: Schedule a mock interview this week. Review the quick guide and identify your weakest topic — spend the next 3 days strengthening it before the mock.