Valid Parentheses

#grind75 #grind75-week1 #leetcode #leetcode-20min #leetcode-easy #stack

January 02, 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 1, problem 2.

This problem is easy, and is expected to take 20 mins.

https://leetcode.com/problems/valid-parentheses