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8 lines
258 B
Python
8 lines
258 B
Python
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# 测试用例
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assert ''.join([]) == ''
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assert ','.join(['a']) == 'a'
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assert ','.join(['a', 'b']) == 'a,b'
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assert ''.join(['a', 'b', 'c']) == 'abc'
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assert '-'.join(['a', 'b', 'c']) == 'a-b-c'
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assert ' '.join(['hello', 'world']) == 'hello world'
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print("PASS")
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