I think the small problems in something like hackerrank type of websites can be great practice - if you can find good ones! I used to do regex crosswords, whic

I think the small problems in something like hackerrank type of websites can be great practice - if you can find good ones! I used to do regex crosswords, which really helped me cement my reading ability of regexes and in term writing ability. I think programming is closer to writing than playing piano. The types of exercises that writers do to get good are to rewrite, reread and rewrite.