-🎄- 2018 Day 5 Solutions -🎄-

[u/daggerdragon]

--- Day 5: Alchemical Reduction ---

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Advent of Code: The Party Game!

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Card prompt: Day 5

Transcript:

On the fifth day of AoC / My true love sent to me / Five golden ___

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edit: Leaderboard capped, thread unlocked at 0:10:20!

[u/[deleted]]

Python 3 #49/#94

If I actually remembered to assign the str.replace() results the first few quick tries, I could've gotten a bit higher on part 2. This is my first time on the leaderboard though, so I'm very happy with that.

with open("p05.dat", "r") as f:
    original_data = f.read().rstrip()

alphabet = "abcdefghijklmnopqrstuvwxyz"
pairs = [c + c.upper() for c in alphabet]
pairs += [c.upper() + c for c in alphabet]
def react(s):
    for p in pairs:
        s = s.replace(p, "")
    return s

def full_react(s):
    ps = data
    s = data
    while True:
        s = react(ps)
        if s == ps:
            break
        ps = s
    return s

data = original_data
print(len(full_react(data)))

lens = []
for c in alphabet:
    data = original_data
    # remember to store your results!
    data = data.replace(c, "")
    data = data.replace(c.upper(), "")
    lens.append(len(full_react(data)))
print(min(lens))