A new drill - 10 hard level algorithm on Leetcode every day

June 21, 2018

Introduction

I have to invent some drill to push myself to expose the hard level algorithm on Leetcode.com. One thing I can do is to read 10 hard level algorithm every day, so one week I can finish all hard level algorithms.

I do not need to write code for each hard level algorithm. I just need to read the problem statement, and think about it. That is all.

Goal

My goal is to quickly identify that it is hard level algorithm. When the problem comes out, I can quickly identify it as a familiar problem.

Try to invent something to help myself.