Week 1-2: Arrays + Strings (25 problems)
  - Two Sum, 3Sum, Container With Most Water
  - Longest Substring Without Repeating Characters

Week 3-4: Trees + Graphs (25 problems)
  - BFS/DFS traversals, LCA, Valid BST
  - Number of Islands, Course Schedule

Week 5-6: Dynamic Programming (20 problems)
  - Fibonacci variants, Knapsack, LIS
  - Coin Change, Word Break, Edit Distance

Week 7-8: Binary Search + Sliding Window (20 problems)
  - Search in Rotated Array, Median of Two Sorted Arrays
  - Minimum Window Substring

Week 9-10: Mixed Practice (30 problems)
  - Mock interviews on Pramp/Interviewing.io
  - Company-tagged problems on LeetCode
  
Week 11-12: System Design + Behavioral
  - Design 5 systems (see below)
  - Prepare 8-10 STAR stories

1. REQUIREMENTS (5 min)
   └── Functional + Non-functional + Scale

2. HIGH-LEVEL DESIGN (10 min)
   └── API + Data model + Architecture diagram

3. DEEP DIVE (15 min)
   └── Database choice + Scaling + Trade-offs

4. WRAP UP (5 min)
   └── Monitoring + Future improvements

Situation: Set the scene (1-2 sentences)
Task:      What was your responsibility?
Action:    What specifically did YOU do?
Result:    Quantifiable outcome + learning