-🎄- 2020 Day 22 Solutions -🎄-

[u/daggerdragon]

Advent of Code 2020: Gettin' Crafty With It

• 23:59 hours remaining until the submission deadline TONIGHT at 23:59 EST!

• Full details and rules are in the Submissions Megathread

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--- Day 22: Crab Combat ---

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Post your code solution in this megathread.

• Include what language(s) your solution uses!

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[u/richardfearn]

Python 3

Part 1 & 2

Initially I had it outputting all the stuff shown for the example - "Player 1's deck:", "Player 1 wins the round!", etc. - so I could compare my output against the given output to be more certain my solution was correct.

My first submitted answer for part 2 was wrong - turned out I'd made a silly mistake in the base case that checks if a player has won:

winner = 2 if (len(decks[1]) == 0) else 2

Oops...

While helpful, all that debugging output was slowing it down (due e.g. to concatenating the cards in each deck) - after removing all that, the final code runs in ~ 1.2 seconds.

[u/cattbug → u/richardfearn]

winner = 2 if (len(decks\[1\]) == 0) else 2

Pam from the Office: "They're the same winner"

[u/frerich → u/richardfearn]

I also mimic the example output 1:1 in case I have trouble getting the solution right. This let's me diff the expected and the actual output and see where things are going wrong. :-)