wanghan519

python也没有很方便

from itertools import combinations
with open('a.txt', 'r') as f:
    a = f.readlines()
for i in combinations(range(len(a[0].strip())), 4):
    n = ''.join([a[0][j] for j in i])
    with open(n + '.txt', 'w') as f:
        f.writelines(map(lambda x: ''.join([x[j] for j in i]) + '\n', a))
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拼回来

import os
import re
a = {}
for i in os.listdir('.'):
    if re.match(r'\d+\.txt', i):
        with open(i, 'r') as f:
            t = f.readlines()
            for j in range(len(t[0].strip())):
                if i[j] in a:
                    continue
                a[i[j]] = list(map(lambda x: x[j], t))
k = sorted([i for i in a.keys()])
with open('b.txt', 'w') as f:
    f.writelines(map(lambda y:''.join(y) + '\n', zip(*map(lambda x:a[x], k))))
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