Question

Code in Java Using Arrays ( input should end with 0 to terminate the program)

Bulls and Cows is an old code-breaking mind or paper and pencil game for two or more players, predating the similar commercially marketed board game Mastermind. The game is usually played with 4 digits, but can also be played with 3 or any other number of digits.

The players must try to guess the secret number created by the codemaker. On a sheet of paper, each players write their guess number. The digits must be all different. If the matching digits are on their right positions, they are ‘bulls’, if on different positions, they are ‘cows’. Example:

Secret number: 4 2 7 1

Player’s guess: 1 2 3 4

Then the answer will be 1 bull and 2 cows (The bull is ‘2’ and the cows is ‘1’ and ‘4’).

Write a program to play 4-digits “Bulls and Cows” game.

Input

The first line of input is a positive integer N (1 ≤ N ≤ 100) which indicates the number of input with N-1 players in the test case. The following line contains 4 positif integers represent 4-digit secret number and the next N-1 lines are the players’ guess number. Input is terminated by 0.

Output

For each test case, output a line in the format "Player #x:" where x is the case number (starting from 1). The following n lines are the answer for each player, as shown in the sample output.

Sample Input

6
2 4 3 1 
7 5 4 3 
3 2 0 1 
2 3 4 1 
6 5 0 7 
3 4 1 2 
0

Sample Output

Player #1: 0 bulls 2 cows
Player #2: 1 bulls 2 cows
Player #3: 2 bulls 2 cows
Player #4: 0 bulls 0 cows
Player #5: 1 bulls 3 cows

Answer 1

code:

import java.util.*;
public class Main
{
   public static void main(String[] args) {
   Scanner sc = new Scanner(System.in); //take input from console
   String s =sc.nextLine(); //take no of players
   String secNum = sc.nextLine(); // take secret key
   secNum = secNum.replaceAll(" ", ""); // remove all whtespaces
   int noPlayers = Integer.parseInt(s); //convert string s to no of players
   int i =1; // count no of players
   while(i<noPlayers){ // if i less than no of players than loop do because last player is just 0
    int cows=0; //intiliaze cows to 0
   int bulls=0; //intiliaze bulls to 0
String playerNum = sc.nextLine(); // take player num from each player
playerNum = playerNum.replaceAll(" ", ""); // remove all whtespaces
for(int k=0;k <playerNum.length(); k++){ // loop each number Character by Character
if( (secNum.charAt(k) == playerNum.charAt(k)) ){ // check paticular position num matches
bulls = bulls + 1;
}else if(playerNum.contains(Character.toString(secNum.charAt(k)))){ //check num contains in secret key
cows = cows + 1;
}
}
System.out.println("Player #"+i+": "+bulls+" bulls "+cows+" cows"); //print reulst of player
i++;
   }
   }
}

Screenshot: