调用方法之@递归求阶乘

Question

package step2;

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int a = input.nextInt();
input.close();
int b = fact(a);
System.out.print(b);
}

/********* Begin *********/


/********* End *********/

}

Answer 1

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int a = input.nextInt();
        input.close();
        int b = fact(a);
        System.out.print(b);
    }

    public static int fact(int n) {
        if (n == 0) {
            return 1;
        } else {
            return n * fact(n - 1);
        }
    }
}

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