回答編集履歴
1
追記を受けて
test
CHANGED
@@ -45,3 +45,125 @@
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まずこれが出来ないと、アルファベットなんてとても太刀打ちできないでしょう。
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追記を受けて
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---
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例えばこんなクラスを組むと、『加算』をカスタムできます。
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```Python
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class Elem:
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def __init__(self, chr, num=None):
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if num is not None:
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self._chr = chr
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self._num = num
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return
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if chr in [0, '0']:
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self._chr = None
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self._num = 0
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return
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if isinstance(chr, str):
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self._chr = chr[0]
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self._num = int(chr[1:])
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return
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raise ValueError
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def is_zero(self):
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return self._chr is None
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def __add__(self, other):
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if self.is_zero():
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return other
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if other.is_zero():
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return self
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if self._chr == other._chr:
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return Elem(
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self._chr,
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self._num + other._num
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)
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return Elem(
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self._chr if self._num > other._num else other._chr,
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abs(self._num - other._num)
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)
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def __repr__(self):
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if self._chr is None:
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return '0'
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return f'{self._chr}{self._num}'
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print(
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Elem('A3') + Elem('B2')
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)
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```
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**実行結果** [Wandbox](https://wandbox.org/permlink/YZbfo8mODZtiJTLX)
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```plain
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A1
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```
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