Question

***JAVA***

Write a program that randomly populates a standard tic tac toe board, and then determines if there is a winner or if there is a tie (“cat”). Also the program should print out the randomly generated board to verify its findings. You may also assume that the board is fully populated before a winner is checked, and in the event that both players have a winning condition print out that both win.

Example Dialog:

Welcome to Random Tic Tac Toe Checker. Let’s see our randomly generated board.

XOX

XOX

OXX

The X’s win!

Another Example Dialog:

Welcome to Random Tic Tac Toe Checker. Let’s see our randomly generated board.

XOX

XOX

OXO

Cat! No one wins

Yet Another Example Dialog:

Welcome to Random Tic Tac Toe Checker. Let’s see our randomly generated board.

XOX

XOO

XOX

The X’s win! The O’s win!

Answer 1

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class TicTacToe1 {

   static char board[][]; //2D char array to store tictactoe board
   static boolean flag=false;
   public static void main(String a[]){
      
       board=new char[3][3];
       Random r=new Random();
       List<Integer> rans=new ArrayList<Integer>();
      
       //populate the board
       for(int i=0;i<3;i++){
           for(int j=0;j<3;j++){
               //generate random number between 0-10
               int temp=r.nextInt(10);
              
               //if number is generated before then regenerate
               while(rans.contains(temp)){
                   temp=r.nextInt(10);
               }
               rans.add(temp);
              
               //if number is greater than 4 select O else select X
               char c=temp>4 ? 'O' : 'X';
               board[i][j]=c;
               System.out.print(c+" ");
           }
           System.out.println();
       }
      
       checkRowsForWin(); //if any row has same characters
       checkColsForWin(); //if any collumn has same characters
       checkDiagForWin(); //if diagonal has same characters
      
       //if no one wins
       if(!flag){
           System.out.println("Cat!No one wins");
       }
   }
  
   private static void checkRowsForWin(){
      
       //check for all 3 rows
       for(int i=0;i<3;i++){
           if(checkRowCol(board[i][0],board[i][1], board[i][2])==true){
               System.out.println("The "+board[i][0]+"'s Win!");
               flag=true;
              
           }
       }
   }
  
   private static void checkColsForWin(){
      
       //check for all 3 cols
       for(int i=0;i<3;i++){
           if(checkRowCol(board[0][i],board[1][i], board[2][i])==true){
               System.out.println("The "+board[0][i]+"'s Win!");
               flag=true;
              
           }
       }
   }
  
   private static void checkDiagForWin(){
       //check for both diagonals
           if(checkRowCol(board[0][0],board[1][1], board[2][2])==true ||
                   checkRowCol(board[0][2],board[1][1], board[2][0])==true){
               System.out.println("The "+board[1][1]+"'s Win!");
               flag=true;
           }
      
   }
  
   private static boolean checkRowCol(char c1,char c2,char c3){
       return ((c1==c2)&&(c2==c3));
   }
}

OutPut:

O O O
X X O
X O X
The O's Win!

X X X
X O O
O O O
The X's Win!
The O's Win!

X O X
O O X
O X O
Cat!No one wins

X O X
X X O
O O X
The X's Win!