Current repository contains list of the different tasks collected from several interviews.
Each task is done in separate file with description. Complex tasks can be splitted on the several files.
Disclaimer: Presented solutions may be not high optimal and contains some errors. Some of them were done a long time ago and, potentially, I may know the better solutions :) May be I will come back and fix them later.
P.s. Names and companies will not be presented here.
NOTE: all examples were tested on python3.5