How many hours to master a tree algorithm called lowest common ancestor?

July 4, 2019

Introduction

It is so interesting to add all those hours I have spent on Leetcode 236: Lowest common ancestor. I also learn to work on so many things related to tree algorithm, backtracking, recursive function design. Most exciting is to work with so many talent people in software industry in those mock interviews.

Lowest common ancestor

I have interviewed so many engineers in Sillicon Valley and Seattle area using lowest common ancestor algorithm. I just could not believe that I also learn so many things through interview practice.