java编程求1+2+3…+100的和（用递归法）

Answer 1

public class dgQH {

public static void main(String[] args) {
// TODO Auto-generated method stub
int sum = sdg(100);
System.out.println(sum);

}
static int sdg(int x)
{
if(x==1)
{
return 1;
}
else{
return x+sdg(x-1);
}
}

}