So basically I am trying to make a 9x9 grid for a minesweeper game. I need the grid to be filled with question marks to represent a minefield that has not been selected yet. Ex: [?][?][?][?][?] Basically my question is how would I get my program to output an array of question marks like that?
import java.util.Scanner;
import java.util.Arrays;
public class H4_Minesweeper {
public static void main(String[] args) {
//Game Description and rules
System.out.println("Minesweeper is a very straightforward game, the rules are simple.");
System.out.println("Uncover a mine (x), and the game ends. Uncover an empty square (o), and you keep playing.");
System.out.println("A question mark (?) will represent tiles you have not uncovered yet.");
System.out.println("Uncover a number, and it tells you how many mines lay hidden in the eight surrounding squares.");
System.out.println("Use this information to carefully choose which squares to click.");
System.out.println("\n\n\n");
Scanner userin;
String[][] board = new String [9][9];
for (int r = 0; r<board.length;r++){
for (int c = 0; c <board.length;c++){
}
}
}
}
First, you must initialize the array by setting all its elements to "?"
:
String[][] board = new String [9][9];
for (int r = 0; r<board.length;r++){
for (int c = 0; c <board.length;c++){
board[r][c] = "?";
}
}
Then you can print it:
for (int r = 0; r<board.length;r++){
for (int c = 0; c <board.length;c++){
System.out.print (board[r][c] + " ");
}
System.out.println();
}
This should do it.
for (int r = 0; r<board.length;r++){
for (int c = 0; c <board.length;c++){
board[r][c] = "?"; // Initialize the cell
System.out.print("[" +board[r][c] + "]"); // Display the content of cell board
}
System.out.println(); // go to next line
}
Fill your 2d array with the String "?" for each of the grid spaces, and then, go row by row printing out the values of each array index
Filling array:
String[][] board = new String[9][9];
for(int y=0;y<9;y++){
for(int x=0;x<9;x++){
board[x][y] = "?";
}
}
Displaying the rows:
for (int r = 0; r<9;r++){
String line = "";
for (int c = 0; c <9;c++){
line+="["+board[c][r]+"]";
}
System.out.println(line);
}
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