Just make new PR with an algorithm, data structures, ciphers or puzzle implementation. Language doesn't matter. Follow the structure: https://github.com/ZoranPandovski/al-go-rithms#contribution

If the implementation already exists follow the code structure and create new dir with e.g your name, 1, 2, or use your imagination 💥 🥇

The code from https://cp-algorithms.com/graph/push-relabel.html doesn't work.
Very easy to see that it is buggy, since the code doesn't use the target vertex t at all.

Could we add some data validation functions such as,
make upper case,
make lower case,
get random double,
get random int?

Need to write a set of tutorials detailing the various examples, in the style of the "simple-exercise" tutorial.

Description of the problem

Idea of using arrays for constructing binary trees originated from codezonediitj/pydatastructs#38 (comment) which uses arrays for constructing binary heaps.
The challenge is to make the change without breaking existing API. One appro