Trapping Rain Water

#grind75 #grind75-week8 #leetcode #leetcode-35min #leetcode-hard #stack

August 04, 1970

Prerequisites

To understand this note, these notes may help:

Grind75, a better Blind75 you can customize
- Leetcode discussion on Blind75 LeetCode questions
  - Memorising Leetcode by using Anki as a Scheduler

Grind75 week 8, problem 4.

This problem is hard, and is expected to take 35 mins.

https://leetcode.com/problems/trapping-rain-water