63. Unique Paths II 🚀 Memoization & Tabulation | Dynamic Programming

In this video, we'll solve LeetCode 63 - Unique Paths II using two important DP approaches: Memoization (Top-Down) Tabulation (Bottom-Up) Code Link : https://docs.google.com/document/d/1G... 💡 Key Idea: The problem is similar to Unique Paths, but now the grid contains obstacles. From each valid cell, we can move only Right ➡️ or Down ⬇️, while obstacle cells cannot be visited. ⚡ Concepts Covered ✔ Dynamic Programming ✔ Memoization ✔ Tabulation ✔ Grid DP ✔ Handling Obstacles ✔ Top-Down & Bottom-Up Approach ⏱️ Complexity Time Complexity: O(m × n) Space Complexity: O(m × n) 📌 LeetCode 63 - Unique Paths II is an important Grid DP problem and a great follow-up to LeetCode 62 - Unique Paths. Don't forget to Like 👍, Share 📤 and Subscribe 🔔 for more DSA tutorials in Tamil! 🚀 #leetcode #leetcode63 #dsa #exam #coding #codinginterview #algorithms #programming #java #python #cpp #datastructures #like #likeforlikes #codingintamil #developers #viral #viralshorts #interviewprep #learncoding #problemsolving #faang #explore #explorepage