将一个字符串倒序输出

public class NewTest {
public static void main(String[] args){

NewTest nt = new NewTest();
System.out.println(nt.lian("tian"));
}

//将一个字符串倒序输出  例如：abc-->cba
public String f(String s){
int length = s.length();
StringBuffer sb = new StringBuffer();
for (int i=length-1;i>=0;i--){
sb.append(s.charAt(i));
}
return sb.toString();

}