I do a coding challenge most weekdays. Here is where I openly share my work.
Mastery of Data Structures and Algorithms helps us build scalable programs that use computing resources efficiently. Coding challenges are effective ways to hone these skills.
These challenges come from a variety of sources including Codewars, LeetCode, Leon Noel, textbooks, freeCodeCamp, etc.
Codewars license: FreeBSD 2-Clause License