Dev Challenges
Because there's so many ways...
Intro
This is a library of coding challenges I've come across in interviews since July 2020. It's a playground to keep working on my solutions, and keep a running log.
Catalogue
20-07-23
Working with a CSV dataset. Summarizing data. Calculate a count for each unique value in a column (ie. How many times does a unique value appear in said column?). For each of those unique values, find the min (earliest) and max (latest) values (date type), found in a different column.
20-08-18
Submitted language(s): PHP + SQL
Alt language(s): Python, JS
Credits
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