Java Factorial程序

Question

我找不出我的代码中遗漏了什么。任何帮助都将不胜感激。我是编程新手，我只是在做一些练习。谢谢!

import java.util.Scanner;
import java.lang.Math;

public class Factorial {

    public static Scanner sc;

    public Factorial() {
    }

    int factorial(int n) {
        for (int j = n - 1; j > 0; j--) {
            int factorial = factorial(0) * j;
        }
        return factorial(0);
    }

    public static void main(String[] args) {

        System.out.print("Enter a number to find its factorial: ");
        sc = new Scanner(System.in);
        int myNumber = sc.nextInt();

        Factorial myFactorial = new Factorial();
        System.out.println(myFactorial.factorial(myNumber));
    }
}

Answer 1

您缺少边角大小写(对于0)：

int factorial(int n) {
    if (n == 0) return 1;
    for (int j = n - 1; j > 0; j--) {
        int factorial = factorial(0) * j;
    }
    return factorial(0);
}

Answer 2

在递归模式下：`

import java.util.Scanner;
import java.lang.Math;




class Factorial {

public static Scanner sc;


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

public static void main(String[] args) {

    System.out.print("Enter a number to find its factorial: ");
    sc = new Scanner(System.in);
    int myNumber = sc.nextInt();

    //Factorial myFactorial = new Factorial();
    System.out.println(factorial(myNumber));
}
}`

Answer 3

好吧..。不管您在n上提供了什么，您总是返回factorial(0)，这最终导致对factorial的调用的无限循环，所以我猜您的堆栈正在遭受重创，并获得堆栈溢出错误，对吧？我认为这就是错误所在。