Java Classic Bunny problem

Title: Classical Questions: There are a pair of rabbits, from the 3rd month after birth a pair of rabbits each month, the rabbit long to the third month after the birth of a pair of rabbits, if the rabbit is not dead, ask each month the total number of rabbits?

1. Program Analysis: The law of Rabbits for the series 1,1,2,3,5,8,13,21 ....

Package Org.llh.demo01;import Java.util.arraylist;public class DemoTest002 {static arraylist<integer> list = new ArrayList ();    int number;//count of rabbits after one months public    static void Main (string[] args) {    DemoTest002nd = new DemoTest002 ();        St.fun ();        St.out ();    }        private void Fun () {//The number of rabbits for 12 months is saved in the list linked list        list.add (1);        List.add (1); Rabbits in the first two months for        (int i = 3;i<=12;i++) {Number            = List.get (i-2) +list.get (i-3);            List.add (number);        }    }        private void Out () {//Output 12-month rabbit number        int i =1;        for (int j:list) {            System.out.println ("+" + (i++) + "Rabbit number of months is" +j);}}}    

　　

12 months Total

Package Org.llh.demo01;public class DemoTest001 {static int month[] = {1,2,3,4,5,6,7,8,9,10,11,12};//months static in      t TYPE = 1;  Couple of pairs of        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);              }  }

　　

Java Classic Bunny problem