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Advent of Code day 6

was preparing my butthole after the last one but ended up being the fastest one i've done :marseyexcited:

with open("day6input.txt") as f:
    input = f.read()

# part 1

for i in range(len(input)):
    marker = set(input[i:i+4])
    if len(marker) == 4:
        answer = i + 4
        break

print(answer)

# part 2 

for i in range(len(input)):
    marker = set(input[i:i+14])
    if len(marker) == 14:
        answer = i + 14
        break

print(answer)
28
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input="string here"
seen=[]
for i in range(len(input)):
    ch=input[i]
    seen.append(ch)
    if (seen.index(ch)!=len(seen)-1):
        seen=seen[seen.index(ch)+1:]
    if(len(seen)==14): #4 for part 1
        print(i+1)
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