Here are some practices with different languages in leetcode mainly in Java and Golang.
I put problems already accepted and some tutorials here for beginners to practice in leetcode. Some of are too hard to understanding , so I add some explain for you to understand them more easily. Have fun with them.
problems solved with c++.
problems solver with Java.
if you want to easily understand different kinds of problems, you can visit here first. I put some tutorials here to help you.
here are some practices about how to write user test cases with testify.