This repo is used for deliberate programming practice. Here you'll find interview questions and answers à la manière de leetcode, HackerRank, etc.
My brilliant former piano teacher once said to me "Don't take notice of the quote 'practice makes perfect', it's incorrect. It should be 'Perfect practices makes perfect'.". She was trying to impart the power of deliberate practice. I thought it was wonderfully original. It turns out she probably stole that quote from Vince Lombardi.
This idea is also covered in depth by Cees de Groot, Peter Norvig, and Charles Wetherell.
Solutions to Project Euler problems. Written in Java.
Backup of leetcode solutions. Written in Java, Kotlin and Go.
Answers to generic programming questions I've found on the web. Written in whatever I feel like at the time
I use various notes to help me practice for interviews, since this is when most of my problem solving abilites get used outside of personal projects. I have some interview tips/links to other resources on my website. I also use my university notes and I try to update them from time to time, even though it's been a few years since I graduated.