TQC+ JAVA

JPA04.java

import java.util.Scanner;
public class JPA03 {
    static Scanner keyboard = new Scanner(System.in);
    public static void main(String[] args) {
		int sum = 1;
		System.out.print("Input m:");
		int m = keyboard.nextInt();
		while(true) {
			if(m < 0 || m == 999) {
				break;
			}
			System.out.print("Input n:");
			int n = keyboard.nextInt();

			System.out.println("Ans (尾端遞迴) : " + factorial(m, n, sum));
			System.out.println("Ans (迴圈) : " + factoLoop(m, n));

			System.out.print("Input m:");
			m = keyboard.nextInt();
		}
    }
	public static int factorial(int m, int n, int sum) {
		if(n == 0) {
			return sum;
		}
		return factorial(m, n-1, m * sum);
	}
	public static int factoLoop(int m, int n) {
		int sum = 1;
		for(int index=1;index<=n;index++) {
			sum *= m;
		}
		return sum;
	}
}