Edit 42. Trapping Rain Water

LeetCode #

Title

Difficulty - Select an option - Medium Hard

LeetCode URL

Primary Pattern - Select an option - 1D DP Binary Search DFS Graphs Greedy Hashing Heap Intervals Linked List Monotonic Stack Sliding Window Topological Sort Two Pointers

Secondary Patterns 1D DP Binary Search DFS Graphs Greedy Hashing Heap Intervals Linked List Monotonic Stack Sliding Window Topological Sort Two Pointers

Notes