代码部分
public class factorial {
public static void main(String[] args) {
int num=factor(5);
System.out.println(num);
}
public static int factor(int n){
if(n==1){
return 1;
}else{
int num=n*factor(n-1);
return num;
}
}
}
运行结果
120
Process finished with exit code 0