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Solve day3 part 2

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Gabriel Augendre 2021-12-03 13:15:50 +01:00
parent 3bf0fcec57
commit 4109a72a98
1 changed files with 45 additions and 3 deletions
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48
2021/day03_gamma.py
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@ -44,9 +44,51 @@ def _most_common(count_ones, total, index):
def solve_part_2(data):
return 0
oxygen = _oxygen(data)
co2 = _co2(data)
return oxygen * co2
def _oxygen(data):
index = 0
max_index = len(data[0])
while index < max_index:
if len(data) == 1:
return int(data[0], 2)
ones, zeros = _separate_ones_zeros(data, index)
index += 1
if len(ones) >= len(zeros):
data = ones
else:
data = zeros
return int(data[0], 2)
def _co2(data):
index = 0
max_index = len(data[0])
while index < max_index:
if len(data) == 1:
return int(data[0], 2)
ones, zeros = _separate_ones_zeros(data, index)
index += 1
if len(ones) < len(zeros):
data = ones
else:
data = zeros
def _separate_ones_zeros(data, index):
ones = []
zeros = []
for binary in data:
if binary[index] == "1":
ones.append(binary)
else:
zeros.append(binary)
return ones, zeros
if __name__ == "__main__":
main("inputs/day03-test1", expected_part_1=198)
main("inputs/day03")
main("inputs/day03-test1", expected_part_1=198, expected_part_2=230)
main("inputs/day03", expected_part_1=1997414, expected_part_2=1032597)