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28 lines
529 B
Python
28 lines
529 B
Python
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def number_to_base(n: int, b: int) -> list[int]:
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if n == 0:
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return [0]
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digits = []
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while n:
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digits.append(int(n % b))
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n //= b
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return digits[::-1]
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def to_base(n: int, base: list) -> str:
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if n == 0:
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return ""
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b = len(base)
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res = ""
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while n:
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res += base[int(n % b)]
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n //= b
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return res[::-1]
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def from_base(expr: str, base: int) -> int:
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return sum(
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[int(character) * base**index for index, character in enumerate(expr[::-1])]
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)
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