fork download
copy 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.  
  11.     public static void main (String[] args) throws java.lang.Exception
  12.     {
  13.         int rtn = openedRoomNo(5);
  14.         System.out.println("return value is : " + rtn);
  15.     }
  16.  
  17.  
  18.     static int openedRoomNo(int rooms) {
  19.         int rtnVal = 0;
  20.         //set default arr
  21.         int[][] roomsArr = new int[rooms][2];
  22.         int cnt = 0;
  23.         for(int[] room : roomsArr) {
  24.             room[0] = ++cnt;
  25.             System.out.println("room0 is: " + room[0]);
  26.             room[1] = 1;
  27.         }
  28.         rtnVal = loopAtAddedCount(2, roomsArr);
  29.         return rtnVal;
  30.     }
  31.  
  32.     static int loopAtAddedCount (int divNo, int[][] rooms) {
  33.         int loopCnt = 0;
  34.  
  35.         if(divNo == rooms.length) {
  36.             for(int[] room : rooms) {
  37.                 if(room[1] == 1) {
  38.                     loopCnt ++;
  39.                 }
  40.             }
  41.             return loopCnt;
  42.         }
  43.  
  44.  
  45.         for(int [] room : rooms) {
  46.            if(divNo % room[0]  == 0) {
  47.                if(room[1] == 0) {
  48.                    room[1] = 1;
  49.                }else {
  50.                    room[1] = 0;
  51.                }
  52.            }
  53.         }
  54.         divNo +=1;
  55.         return loopAtAddedCount(divNo , rooms);
  56.     }
  57. }
Success #stdin #stdout 0.09s 34016KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
room0 is: 1
room0 is: 2
room0 is: 3
room0 is: 4
room0 is: 5
return value is : 2
https://ideone.com/D4bF7P
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!