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【C#】判断字符串中是否包含指定字符串,contains与indexof方法效率问题 - willingtolo...
source link: https://www.cnblogs.com/willingtolove/p/9782533.html
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#方法一：使用string.Contains方法 string.Contains是大小写敏感的，如果要用该方法来判断一个string是否包含某个关键字keyword，需要把这个string和这个key
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