串的应用整理.docVIP

using System; using System.Collections.Generic; using System.Text; namespace 串 { class Program { static void Main(string[] args) { string s1 = I am a college student; String s2 = I am a good person; String s3 = String.Empty; Console.WriteLine(s1); Console.WriteLine(s1.Length );//22 Console.WriteLine(s1[8]);//o Console.WriteLine(s2); Console.WriteLine(s2.Length );//18 Console.WriteLine(s2[5]);//a Console.WriteLine(s3); //Console.Read(); //比较字符串 //compare方法 String str1 = Good; String str2 = Personality; Console.WriteLine(String .Compare (str1 ,str2 ));//-1 Console.WriteLine(String.Compare(str2, str2));//0 Console.WriteLine(String.Compare(str2, str1));//1 //compareTo方法 Console.WriteLine(str1 .CompareTo (str2));//-1 //Equals方法 Console.WriteLine(String .Equals (str1,str2) );//false Console.WriteLine(str1.Equals (str2));//false //比较运算符 Console.WriteLine(str1==str2);//false Console.WriteLine(str1 != str2);//true //定位子串和字符位置 Console.WriteLine(str1.StartsWith (Go));//true Console.WriteLine(str2 .IndexOf (t));//9 //IndexOfAny char[]anyof={P,o,y}; Console.WriteLine(str2 .IndexOfAny (anyof));//0 Console.WriteLine(str2 .LastIndexOfAny (anyof));//10 //连接字符串 //Concat String newStr = ; newStr = String.Concat(str1, , str2); Console.WriteLine(newStr);//“Good Personality //join newStr = ; String[] strArr ={ str1, str2 }; newStr = String.Join(^^, strArr); Console.WriteLine(newStr);//Good^^Personality //+ newStr = ; n