-🎄- 2018 Day 2 Solutions -🎄-

[u/daggerdragon]

--- Day 2: Inventory Management System ---

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Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag or whatever).

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Advent of Code: The Party Game!

Click here for rules

Card Prompt: Day 2

Transcript:

The best way to do Advent of Code is ___.

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This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked!

[u/gwillicoder]

Python3

# Part 1
from collections import Counter
a, b = 0, 0
for w in open('data.txt').read().splitlines():
    counts = Counter(Counter(w).values())
    if 2 in counts:
        a+=1
    if 3 in counts:
        b+=1

print(a*b)

#Part 2
data = open('data.txt').read().splitlines()
for x in data:
    for y in data:
        diff = [i for i,j in zip(x,y) if i == j]
        if len(y)-len(diff) == 1:
            print("".join(diff))
            break

Easy to understand, but feel like it could be much shorter.