45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
from typing import List
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import pytest
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class Solution:
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def calPoints(self, operations: List[str]) -> int:
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r: List[int] = [] # result
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r_l: int = 0
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for o_i in range(0, len(operations)):
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try:
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i = int(operations[o_i])
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r.append(i)
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r_l += 1
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continue
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except ValueError:
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pass
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if operations[o_i] == "+":
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r.append(r[r_l - 1] + r[r_l - 2])
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r_l += 1
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continue
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elif operations[o_i] == "D":
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r.append(r[r_l - 1] * 2)
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r_l += 1
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continue
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elif operations[o_i] == "C":
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r.pop()
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r_l -= 1
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continue
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else:
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pass
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return sum(r)
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@pytest.mark.parametrize(
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"input, exp_output",
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[
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(["5", "2", "C", "D", "+"], 30),
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(["5", "-2", "4", "C", "D", "9", "+", "+"], 27),
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(["1", "C"], 0),
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([], 0),
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],
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)
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def test_solution(input, exp_output):
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sol = Solution()
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assert sol.calPoints(input) == exp_output
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