JAVA经典兔子问题

package org.llh.demo01;

import java.util.ArrayList;

public class DemoTest002 {

	static ArrayList<Integer> list = new ArrayList();
    int number ;//计算后一个月的兔子数量
    public static void main(String[] args){
    	DemoTest002 st = new DemoTest002();
        st.fun();
        st.out();
    }
    
    private void fun(){ //将12个月的兔子数量保存进list链表集合内
        list.add(1);
        list.add(1); //前两个月的兔子数量
        for(int i = 3;i<=12;i++){
            number = list.get(i-2)+list.get(i-3);
            list.add(number);
        }
    }
    
    private void out(){//输出12个月的兔子数量
        int i =1;
        for(int j:list){
            System.out.println("第"+(i++)+"个月的兔子数量是"+j);
        }
    }

}

package org.llh.demo01;

public class DemoTest001 {

	 static int MONTH[] = {1,2,3,4,5,6,7,8,9,10,11,12}; //第几个月  
	    static int TYPE = 1;  //一对生几对  
	  
	    private int getCount(int month, int type){  
	        int sum = 0;  
	        if(month == 1 || month ==2){  
	            sum = 1;  
	        }else{  
	            sum = getCount(month - 1,1) + getCount(month - 2,1)*type;  
	        }  
	        return sum;  
	    }  
	      
	    public static void main(String[] args) {  
	        int count=0;  
	    	for(int a:MONTH){
	        	  
	        	  int sum = (new DemoTest001()).getCount(a, TYPE);
	        	  count = sum+count;
	          }
	    	System.out.println(count);
	          
	    }  

}