题一：//翻转字符串s
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string s = "asdfghjk"; for (int i = s.Length-1; i >= 0;i-- )//遍历的方式倒序输出 { Console.Write(s[i]); } Console.ReadKey(); } 方法二： string s = "asdfghjk"; char[] chs= s.ToCharArray(); for (int i = 0; i < s.Length/2; i++)//首尾交换 { char temp = chs[i]; chs[i] = chs[s.Length - i - 1]; chs[s.Length - i - 1] = temp; } //s=chs.ToString();//错误 s = new string(chs);//字符数组转字符串 不能直接这样转s=chs.ToString() Console.Write(s); Console.ReadKey(); |
注意： 一：字符串数 […]