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Solve day 5 part 1

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Gabriel Augendre 2020-03-04 23:05:16 +01:00
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commit efb48beccc
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61
2019/day05-intcode.py Normal file
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ZERO_PARAM_CODES = [99]
ONE_PARAM_CODES = [3, 4]
THREE_PARAMS_CODES = [1, 2]
def compute(lst):
result = lst.copy()
i = 0
while i < len(result):
first_instruction = str(result[i])
code = int(first_instruction[-2:])
param_modes = first_instruction[:-2]
if code == 99:
print("Halting due to code 99")
return result
if code in THREE_PARAMS_CODES:
offset = 4
param_modes = param_modes.zfill(offset - 1)
param_modes_parsed = list(map(int, reversed(param_modes)))
position1, position2 = result[i + 1], result[i + 2]
if param_modes_parsed[0] == 0:
item1 = result[position1]
else:
item1 = position1
if param_modes_parsed[1] == 0:
item2 = result[position2]
else:
item2 = position2
result_index = result[i + 3]
if code == 1:
result[result_index] = item1 + item2
elif code == 2:
result[result_index] = item1 * item2
elif code in ONE_PARAM_CODES:
offset = 2
param_mode = int(param_modes.zfill(offset - 1))
position = result[i + 1]
if code == 3:
result[position] = int(input(f"Input for instruction {i}"))
elif code == 4:
if param_mode == 0:
res = result[position]
else:
res = position
print(res)
else:
raise ValueError(f"Something bad happened, code={code}")
i += offset
return result
if __name__ == "__main__":
with open("inputs/day05") as f:
compute(list(map(int, f.read().split(","))))

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2019/inputs/day05 Normal file
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