問題描述

為什么最后會報錯？

public static int count(int n){int result;result = n/4+count(n-4);if (n<0) result = 0;return result; }public static void main(String[] args){System.out.println(count(5)); }

Exception in thread 'main' java.lang.StackOverflowError

at huam.count(huam.java:4)at huam.count(huam.java:4)at huam.count(huam.java:4)at huam.count(huam.java:4)

問題解答

public static int count(int n){if (n<0) return 0;return n/4+count(n-4); }