This reminds me, a lot of computer science courses come with exercises, like turn this input into piglatin, so

programming exercises pig latin

IT508 - INTERNET PROGRAMMING - CLASS 2ASSIGNMENT

CSCI 517 Natural Language Processing (Spring 1999)Programming exercise #2: due Monday January 25Pig Latin Applet

Course 10 Exercises

Computer Science 202

The Object Game - An Exercise for Studying Objects

Introduction to Computer Science using Java

Introduction to Computer Science using Java

CodingBat - online code practice

...

And I just want to say, keep track of which exercises you do, put your efforts into version control -- its amazing to be able to revisit your code 1, 5, 10 years later