My Advent of Code solutions in Python.
kevinyap.ca/2019/12/going-fast-in-advent-of-code/
advent-of-code
python
Update day18.py
Refactor trap prediction logic into a simple boolean XOR.
+2
-15
+2
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2016/day18.py
+2
-15
2016/day18.py
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next_row = []
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for i in range(len(row)):
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a, b, c = (is_safe(row, x) for x in range(i-1, i+2))
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next_row.append(predict_safe(a, b, c))
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a, c = is_safe(row, i - 1), is_safe(row, i + 1)
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next_row.append(not (a ^ c))
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return tuple(next_row)
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def predict_safe(a, b, c):
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if a and b and not c:
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return False
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elif not a and b and c:
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return False
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elif a and not b and not c:
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return False
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elif not a and not b and c:
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return False
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return True
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if __name__ == '__main__':