TicTacToe1D.java - Complete

import java.util.Scanner;

public class TicTacToe1D{
   //Declare and initialize a static String array with 9 spots. Name it board.
   private static String[] board = new String[9];
   //Write a static method named initBoard to initialize all elements in board to spaces.
   //The method receives no parameters and returns nothing.
   public static void initBoard(){
      for(int i = 0; i < board.length; i++){//can't use enhanced because need to change things
         board[i] = " ";
      }
   }
   //Write a static method named displayBoard to print out the board in TicTacToe board style
   //The method receives no parameters and returns nothing.
   //Ex:
   // X| |O
   // -+-+-
   // O|X|O
   // -+-+-
   // X|O|X
   public static void displayBoard(){
      String divider = "-+-+-";
      System.out.println(board[0] + "|" + board[1] + "|" + board[2]);
      System.out.println( divider );
      System.out.println(board[3] + "|" + board[4] + "|" + board[5]);
      System.out.println( divider );
      System.out.println(board[6] + "|" + board[7] + "|" + board[8]);
   }

   //Write a static method to do a move and name it move
   //The method takes in a String representing the player (O/X)
   //The method takes in an int representing the spot
   //The method returns true if valid move (legal index and currently occupied by space), false otherwise
   public static boolean move(String player, int spot){
      if( spot < 0 || spot > 8 || !board[spot].equals(" ") ) return false;
      else{
         board[spot] = player;
         return true;
      }
   }

   //Write a method called diagWin to check diagonals for win - return true if there is a winner, false otherwise
   //The method receives no parameters
   public static boolean diagWin(){
      if( !board[0].equals(" ") && board[0].equals( board[4] ) && board[4].equals( board[8] ) ) return true;
      else if( !board[2].equals(" ") && board[2].equals( board[4] ) && board[4].equals( board[6] ) ) return true;
      else return false;
   }

   //Write a method called vertWin to check verticals for win - return true if there is a winner, false otherwise
   //The method receives no parameters
   public static boolean vertWin(){
      for( int i = 0; i <= 2; i++ ){
         if( !board[i].equals(" ") && board[i].equals( board[i+3] ) && board[i+3].equals( board[i+6] ) ) return true;
      }
      return false;
   }

   //Write a method called horizWin to check horizontals for win - return true if there is a winner, false otherwise
   //The method receives no parameters
   public static boolean horizWin(){
      for(int i = 0; i <= 6; i += 3){
         if( !board[i].equals(" ") && board[i].equals( board[i+1] ) && board[i+1].equals( board[i+2] ) ) return true;
      }
      return false;
   }

   //Write a method called checkWin - if diagWin or vertWin or horizWin is true, return true, false otherwise
   //The method receives no parameters
   public static boolean checkWin(){
      return diagWin() || vertWin() || horizWin();
   }

   //Write a main method to play the game.
   public static void main(String[] args){
      Scanner kb = new Scanner(System.in);
      TicTacToe1D.initBoard();
      int turns = 0;
      String player = "";
      while( turns < 9 && checkWin() == false ){
         TicTacToe1D.displayBoard();
         System.out.print("Player (X/O): ");
         player = kb.next();
         System.out.print("Spot #: ");
         int spot = kb.nextInt();
         if( TicTacToe1D.move(player,spot) ){
            System.out.println("Next player's turn");
            turns++;
         }
         else System.out.println("INVALID MOVE. Try again.");
      }
      if( checkWin() == true ) System.out.println( player + " WINS!" );
      else System.out.println( "Cat's Game" );
   }
}