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String usage in C #
2022-07-08 01:01:00 【Poetry and distance】
string.Join
1.string.join
In the specified String The specified separator is concatenated between each element of the array String, This produces a single concatenated string . for example :
string [] array={
abc,def,ghi};
string a = string.Join("-", array);
here a=“abc-def-ghi”;
2.string.IsNullOrWhiteSpace
Judge all blank characters , Function equivalent to string.IsNullOrEmpty and str.Trim().Length The sum of the , He gave the string to Char.IsWhiteSpace by ture Any character of will be correct . according to MSDN Explanation , This method will be more efficient and concise than calling the above two methods , So when judging this function , Recommended .
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2022-07-07: the original array is a monotonic array with numbers greater than 0 and less than or equal to K. there may be equal numbers in it, and the overall trend is increasing. However, the number