5!(简单的了解for循环与递归的区别)

public class Five_factorial {
    public static void main(String[] args) {
        /**
         * 1.普通方法实现5的阶乘
         */
        int f = 1;
        for (int i = 5; i >= 1; i--) {
            f *= i;
        }
        System.out.println(f);
        /**
         * 2.运用递归实现5的阶乘
         */
        int n = 5;
        Five_factorial five_factorial = new Five_factorial();
        factorial fa = five_factorial.new factorial();
        System.out.println(fa.fact(n));
    }

    class factorial {
        int fact(int n) {
            int value = 0;
            if (n == 1) {
                value = 1;
            } else {
                value = n * fact(n - 1);
            }
            return value;
        }
    }

}