回答編集履歴
1
ppaul さん ご指摘不具合の修正版
test
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@@ -40,9 +40,87 @@
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あるいは次のコードかな
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あるいは次のコードかな。
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ppaul さん ご指摘の不具合があったため別コードにしました。
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```Python
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list1 = ['a', 'b', 'c']
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list2 = ['d', 'f', 'e']
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list3 = ['x', 'y', 'z']
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list4 = ['b', 'f', 'g']
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def merge_list(lst: [[]]) -> [[]]:
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prelen = len(lst)
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ovlp = [(i,k) for i in range(len(lst)) for k in range(i+1, len(lst)) if set(lst[i]) & set(lst[k])]
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mono = set(range(len(lst))) - set(n for ov in ovlp for n in ov)
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ans = [lst[i] for i in mono] + [sorted(set(lst[i]+lst[k])) for i,k in ovlp]
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return ans if len(ans) == prelen else merge_list(ans)
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lst = [ls[:2] for ls in (list1, list2, list3, list4)]
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print(merge_list(lst)) # [['x', 'y'], ['a', 'b', 'd', 'f']]
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```
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不具合のあった旧コードベースで修正すると次のコードになります。
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```Python
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list1 = ['a', 'b', 'c']
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list2 = ['d', 'f', 'e']
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list3 = ['x', 'y', 'z']
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list4 = ['b', 'f', 'g']
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def merge_list(lst: [[]]) -> [[]]:
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prelen = len(lst)
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ans = []
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for ls in lst:
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for i, elm in enumerate(ans):
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if set(ls) & set(elm):
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ans[i] = sorted(set(ls + elm))
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break
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else:
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ans.append(sorted(ls))
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return ans if len(ans) == prelen else merge_list(ans)
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lst = [ls[:2] for ls in (list1, list2, list3, list4)]
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print(merge_list(lst)) # [['a', 'b', 'd', 'f'], ['x', 'y']]
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```
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以下は不具合のある旧コードです。
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```Python
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