输入
1 2
2 3
4 3
输出
1
3
10

这是我的代码

import java.util.*;
public class Main {
   
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int m,n;
        while(cin.hasNext()){
            m=cin.nextInt();
            n=cin.nextInt();
            if(m==0&&n==0){
                break;
            }else{
                System.out.println(fun(m,n));
            }
        }
    }
    public static int fun(int m,int n){
        return fun(m,n-1)+fun(m-1,n);
    }
}
但是输不出结果，请指教谢谢

public static int fun(int m,int n){
if(m==0) return n;
if(n==0) return m;
        return fun(m,n-1)+fun(m-1,n);
    }
}

谢谢 我试一试

publicstaticintfun(intm,intn){
if(m==0) return 1;
if(n==0) return 1;
returnfun(m,n-1)+fun(m-1,n);
}
}