实现java字符串的反转
//反转字符串
public class Reverse{
public static void main(String[] args){
reverse();
}
static void reverse(){
String str = "i am winner";
System.out.println("反转前的字符串为"+str);
//StringBuffer str1 = new StringBuffer(str);
System.out.println("反转之后的字符串为");
StringBuffer str1 = new StringBuffer(str);
System.out.println(str1.reverse());
String str2 =str.replaceAll(" ","");//把里面的空格去掉;
System.out.println("去掉空格的str 为:");
System.out.println(str2);
System.out.println("反转之后str2为:");
StringBuffer str3 =new StringBuffer(str2);
System.out.println(str3.reverse());
}
}
结果运行图如下