Tuesday, July 21, 2020

Two hours review of tree algorithms on Leetcode on July 20, 2020

July 22, 2020

Introduction

It is the first time I like to go over the tree algorithms on Leetcode.com. I started from hard level tree algorithms, and medium level algorithms next. I spent over two hours and then I was so busy to review and learn a few things. 

My favorite algorithm No. 1

It is my most favorite algorithm to review. 

No. 2

No. 3 

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