Coding problems from Daily Coding Problem solved in whichever language(s) catch my fancy on that day. https://www.dailycodingproblem.com/
Starting from 2019-02-05 I'll try to commit daily.
P.S. I'll do the problems the next day from publishing due to timezone difference.
+-- {year}
| +-- {month}
| | +-- {date}
| | | +-- {problem_solutions}
| | | +-- {...}