为什么这段代码在java中发送给我Stackoverflow

Question

我已经尝试使用long,并double与c, k, n变量,但NetBeans的显示我一个堆栈溢出错误:

public class Main {

public static void main(String[] args) {
   double c=0; //combinatorial
   double n=5;
   double k=15;

   c= factorial(n)/(factorial(k)*factorial(n-k));

   System.out.print(n+" combinatorial "+k+" between "+c+"\n");

}

    static double factorial (double number) {
        if (number == 0) 
            return 1;
          else 
            return number * factorial(number-1);
   }
}

Exception in thread "main" java.lang.StackOverflowError
    at co.combinatorial.Main.factorial(Main.java:26)
    at co.combinatorial.Main.factorial(Main.java:29)
    at co.combinatorial.Main.factorial(Main.java:29)
    at co.combinatorial.Main.factorial(Main.java:29)
......

Java结果:1

我是否必须使用整数文字或long.parselong

我做错了什么？

Answer 1

从初始值开始,nk = -10.由于这小于0,因此您的阶乘方法将永远不会返回