Hard level algorithms - my Canada day

July 1, 2018

Introduction

It is the first time I spent the whole day to go over as much as possible hard level algorithm starting from 11:00 AM to 6:49 PM.

Hard level algorithm

Here are the list. It is not easy to work on hard level algorithms. I did try my best, and focus on getting the ideas first.

Leetcode 97

Leetcode 247 Medium level

Leetcode 248

Leetcode 272

Leetcode 316

Leetcode 327

Actionable Items

It is better to go over hard level algorithm more often, so I can get used to try to solve challenge problem first, sometimes feel good or frustrated. Over the long run, I should feel more confident. It will become part of my daily life. It is like solving Hackerrank contest, I will enjoy the journey.

It is so surprising today I learned another dynamic programming algorithm called interleave string. It is similar to the algorithm called deletion distance.