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2020-03-26 每日一例第18天 1)使用"+"拼接string字符串 string str = string.Empty; str = "a"; str = str + "b"; str = str + "c"; str = str + "d"; str = str + "e"; Conso 阅读全文
posted @ 2020-03-26 22:00
winnerljs
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2020-03-26 每日一例第17天 string str = "abcdefg"; string str1 = str.Replace("a","0"); Console.WriteLine(str1); Console.ReadKey(); 阅读全文
posted @ 2020-03-26 00:11
winnerljs
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