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41 lines
1001 B
Python
41 lines
1001 B
Python
import re
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from typing import Sequence
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def common_prefix(elements: Sequence[str]) -> str:
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if len(elements) <= 1:
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return ""
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test = re.compile(r"^[^\w]$")
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s1 = min(elements)
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s2 = max(elements)
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i = 0
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min_l = min(len(s1), len(s2))
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if min_l <= 0:
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return ""
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for i in range(min_l):
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if s1[i] != s2[i]:
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break
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else:
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i += 1
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while i > 0 and not test.match(s1[i - 1]):
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i -= 1
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return s1[:i]
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def common_suffix(elements: Sequence[str]) -> str:
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return common_prefix([s[::-1] for s in elements])[::-1]
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def remove_prefix(elements: Sequence[str]) -> Sequence[str]:
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pre = len(common_prefix(elements))
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return [s[pre:] for s in elements]
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def remove_suffix(elements: Sequence[str]) -> Sequence[str]:
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suf = len(common_suffix(elements))
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return [s[::-1][suf:][::-1] for s in elements]
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def remove_common_trails(elements: Sequence[str]) -> Sequence[str]:
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return remove_prefix(remove_suffix(elements))
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