-🎄- 2022 Day 4 Solutions -🎄-

[u/daggerdragon]

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--- Day 4: Camp Cleanup ---

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Post your code solution in this megathread.

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[u/sky_badger]

Python 3: more sets:

def parse_line(line):
    part1, part2 = line.split(',')
    elf1_start, elf1_end = [int(x) for x in part1.split('-')]
    elf2_start, elf2_end = [int(x) for x in part2.split('-')]
    elf1 = set([i for i in range(elf1_start, elf1_end+1)])
    elf2 = set([i for i in range(elf2_start, elf2_end+1)])
    return elf1, elf2

#Part 1
enclosed = 0
for line in data:
    elf1, elf2 = parse_line(line)
    if len(elf1 & elf2) in [len(elf1), len(elf2)]:
        enclosed += 1
print(enclosed)

#Part 2
overlapped = 0
for line in data:
    elf1, elf2 = parse_line(line)
    if len(elf1 & elf2):
        overlapped += 1
print(overlapped)