*
概要Description
签名
s: str * times: int times: int * s: str
功能
将 s 重复 times 次,并拼接起来
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案例Examples
正常情况
str x int
1 =result = 'zzax' * 2'zzaxzzax'
int x str
1 =result = 2 * 'zzax''zzaxzzax'
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s: str * times: int times: int * s: str
将 s 重复 times 次,并拼接起来
1 =result = 'zzax' * 2'zzaxzzax'
1 =result = 2 * 'zzax''zzaxzzax'
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