[delluminatus]

I believe we get puzzles randomly selected from a pool. Mine was about date parsing. Yours?

[M194]

comparing two datafiles with suffled numbers to find matching pairs. all pairs have the same quotient. task was to find the quotient and return it as "improvement-ratio"

[medecau]

Can confirm they're both different from mine. I got a palindrome problem.

[rtkwe]

Yep mine was summing the digits of a number until you reach a single digit number (eg 455 -> 5).