Just for a bit of fun.
These are only 6 samples in my public repository.
Try it yourself:
https://www.codingame.com/home
Links of interest:
https://www.baeldung.com/category/algorithms/
https://www.javatpoint.com/floyd-warshall-algorithm
https://jeffbradberry.com/posts/2015/09/intro-to-monte-carlo-tree-search/
https://www.redblobgames.com/pathfinding/a-star/introduction.html