aoc2020/day08.py
Stefan Harmuth aa07b45ba7 day 8
2020-12-08 06:23:43 +01:00

58 lines
1.6 KiB
Python

import aoclib
DAY = 8
TEST_SOLUTION_PART1 = 5
TEST_SOLUTION_PART2 = 8
def runCode(lines, infinite_returns_value=False):
accumulator = 0
line_pointer = 0
lines_executed = set()
last_line = len(lines)
while line_pointer < last_line:
if line_pointer in lines_executed:
if infinite_returns_value:
return accumulator
else:
return None
lines_executed.add(line_pointer)
command, param = lines[line_pointer].split()
param = int(param)
if command == 'nop':
pass
line_pointer += 1
elif command == 'acc':
accumulator = accumulator + param
line_pointer += 1
elif command == 'jmp':
line_pointer = line_pointer + param
return accumulator
def part1(test_mode=False):
my_input = aoclib.getInputAsArray(day=DAY, test=test_mode)
return runCode(my_input, infinite_returns_value=True)
def part2(test_mode=False):
my_input = aoclib.getInputAsArray(day=DAY, test=test_mode)
counter = -1
for check_command in my_input:
counter += 1
if not check_command.startswith('nop') and not check_command.startswith('jmp'):
continue
check_code = my_input.copy()
if check_command.startswith('nop'):
check_code[counter] = check_code[counter].replace('nop', 'jmp')
if check_command.startswith('jmp'):
check_code[counter] = check_code[counter].replace('jmp', 'nop')
check_answer = runCode(check_code)
if check_answer is not None:
return check_answer