Word count practice

Feb. 18, 2018

Introduction

It is hard for me to master the algorithm called word count practice.  I have to work on the string manipulations, such as lower case, remove extra chars, and split string using regular expression, and then group by the value and sort by input string order.

One more practice

Here is one more practice I did on Feb. 17, 2018 10:00 PM mock interview, I wrote 20 minutes.