java - 打印 10 x 10 坐标网格

Question

我正在打印一个网格，该网格的列显示为 0 - 9，行显示为 0-9。

我想将其显示为 0 - 9 列和 A - J 行，但不确定如何在循环中使用字符而不是整数？

public class BattleshipGame {

private char[][] playerBoard;   
private char[][] compBoard;     
private final static int boardSize = 10;
private String input, shipType, shipDirection = ""; 
public static String name;      
private int shipRowLoc, shipColLoc; 
private boolean allowed, random = false, showShips = false;
private MoveType moveType;
private ArrayList<Battleships> enemyShips = new ArrayList<Battleships>();

Scanner userinput = new Scanner(System.in);

public BattleshipGame() {
    playerBoard = new char[boardSize][boardSize];
    compBoard = new char[boardSize][boardSize];
    initializeBoard();  
    placeShip();    
}

public void initializeBoard() {
    for (int i = 0; i < boardSize; i++)
        for (int j = 0; j < boardSize; j++){
            playerBoard[i][j] = '~';
            compBoard[i][j] = '~';
    }
}

Answer 1

你有几个选择，你可以使用

for (char ch = 'A'; ch <= 'J'; ch++)

或者类似的东西

for (int j = 0; j < 10; j++) {
  char ch = (char) ('A' + j);