字符串翻转
输入一个字符串，将该字符串反转
输入用例：
123
输出用例：
321
输入用例：
abcd
输出用例：
dcba
输入用例：
1
输出用例：
1
import java.util.*;
public class Main{
public static void main(String[] args) {
// your code
Scanner sc=new Scanner(System.in);
int i=1;
Test test =new Test();
int total=0;
while(sc.hasNextLine()){
int a=sc.nextInt();
int b=sc.nextInt();
switch(a){
case 0: total=test.setA(b);
System.out.println(total);break;
case 1: total=test.add(total,b);
System.out.println(total);break;
case 2: total=test.sub(b,total);
System.out.println(total);break;
case 3: total=test.mul(total,b);
System.out.println(total);break;
case 4: total=test.div(b,total);
System.out.println(total);break;
}
}
}
}
class Test{
private int a=0;
private int sum=0;
Test(){}
Test (int a,int sum){
this.a=a;
this.sum=sum;
}
public int setA(int a){
return a;
}
public int setSum(int sum){
return sum;
}
public void getA(){
this.a=a;
}
public void getSum(){
this.sum=sum;
}
int add(int a,int sum){
return a+sum;
}
int sub(int a,int sum){
return sum-a;
}
int mul(int a,int sum){
return a*sum;
}
int div(int a,int sum){
return sum/a;
}
}
