Data Structures and Algorithms with Python | Free DSA with Python Course - DSA in Python - House Robber II | 4 DP Approaches | Circular Constraint | LeetCode Medium | Part 194

📘 Welcome to Part 194 of Code & Debug's DSA in Python Course! Continuing our Dynamic Programming series after House Robber I, we now take on the classic House Robber II problem from LeetCode. With houses arranged in a circle, this problem introduces a key twist to the standard DP pattern: You cannot rob the first and last house together. We’ll break down the optimal strategy and implement all 4 DP approaches: recursion, memoization, tabulation, and fully space-optimized tabulation, as explained in detail in our companion article. This is a must-know variation often asked in interviews to assess your problem-solving depth with DP and your ability to adapt classic patterns to new constraints. 👨🏫 What's covered in this video: 1. Complete understanding of the circular constraint (why it changes things) 2. Approach 1: Brute-Force Recursion 3. Approach 2: Memoization (Top-Down DP) 4. Approach 3: Tabulation (Bottom-Up DP) 5. Approach 4: Space-Optimized Tabulation (for interviews and production) 6. How to split the circular array into two linear cases 7. Python code for each approach and dry run walkthroughs 8. Complexity analysis & summary table By the end of this session, you’ll master how to adapt dynamic programming techniques for constraints like circular arrays! 🔗 LeetCode Problem - House Robber II: https://leetcode.com/problems/house-robber-ii/description/ 🔗 Full Article with Code & Explanations: https://codeanddebug.in/blog/house-robber-ii/ 📄 Full Playlist Sheet (All Questions in Order): https://docs.google.com/spreadsheets/d/1AWE15Fy3wD2iqu2vjK_R7cCiuvSsjYQclcdZmHpF66o/edit?usp=sharing 🎓 Enroll in the FREE Python DSA Course: https://codeanddebug.in/course/master-dsa-with-leetcode 🚀 Advance Python DSA for FAANG (Zero to Hero Course): https://codeanddebug.in/course/zero-to-hero-python-dsa Stay focused and keep coding with Code & Debug. Like | Share | Subscribe | Hit the 🔔 #HouseRobberII #DynamicProgramming #CircularDP #Memoization #Tabulation #SpaceOptimization #LeetCode #PythonDSA #CodeAndDebug #Part194 #Recursion #DPPatterns #InterviewPrep