java 求阶乘（递归算法）

[java]代码库

/**
 * 求阶乘
 */
public class Demo {
	public static int factorial(int num) {
		int result = 1;
		if (num > 0) {
			result = num * factorial(num - 1);
		}
		return result;
	}

	public static void main(String[] args) {
		System.out.println(factorial(3));
	}
}