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import unittest

from typing import List

class Solution:

def reorderLogFiles(self, logs: List[str]) -> List[str]:

letters, digits = [], []

for log in logs:

if log.split()[1].isdigit():

digits.append(log)

else:

letters.append(log)

letters.sort(key=lambda x: (x.split()[1:], x.split()[0]))

return letters + digits

class Test(unittest.TestCase):

def test_reorderLogFiles(self):

solution = Solution()

self.assertEqual(

solution.reorderLogFiles(["dig1 8 1 5 1", "let1 art can", "dig2 3 6", "let2 own kit dig", "let3 art zero"]),

["let1 art can", "let3 art zero", "let2 own kit dig", "dig1 8 1 5 1", "dig2 3 6"])

self.assertEqual(

solution.reorderLogFiles(["a1 9 2 3 1", "g1 act car", "zo4 4 7", "ab1 off key dog", "a8 act zoo"]),

["g1 act car", "a8 act zoo", "ab1 off key dog", "a1 9 2 3 1", "zo4 4 7"])

if __name__ == '__main__':

unittest.main()