27 lines
719 B
Python
27 lines
719 B
Python
''' mbinary
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#########################################################################
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# File : nega.py
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# Author: mbinary
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# Mail: zhuheqin1@gmail.com
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# Blog: https://mbinary.xyz
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# Github: https://github.com/mbinary
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# Created Time: 2019-06-02 23:15
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# Description:
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#########################################################################
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'''
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def nega(n: int, base=-2: int)->: list:
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'''return list of num, the first is the highest digit'''
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if base > -2:
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raise Exception(
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f"[Error]: invalid base: {base}, base should be no more than -2")
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ans = []
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while n:
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k = n % base
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if k < 0:
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k -= base
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ans.append(k)
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n = (n-k)//base
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return ans[::-1]
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