使用 Groovy 的简单井字游戏（switch 语句中的索引不更改双数组中的元素）

Question

我是 Groovy 的新手，我一直在尝试制作一个简单的井字游戏。由于那里没有与 groovy 相关的资源，我一直在关注一个 Java 项目并试图将其转换为 groovy。到目前为止一切正常，但我的 switch 语句中的数据没有用 X 替换双数组中的 space。我尝试调试它但找不到问题所在。下面是代码：

`def gameBoard = [[' ','|',' ','|',' '],
    ['-','+','-','+','-'],
    [' ','|',' ','|',' '],
    ['-','+','-','+','-'],
    [' ','|',' ','|',' ']] as char[][]


//user needs to put a piece in one of the spaces, can do this my doing indexes but easier to number boxes 1-9
println "Enter your placement 1-9"
def input = System.in.newReader().readLine()
println input

//changing a symbol (changing the space characters with our own symbol)
switch(input){
//first row, first char
    case 1:
        gameBoard[0][0] = 'X'
        break
    case 2:
        gameBoard[0][2] = 'X'
        break
    case 3:
        gameBoard[0][4] = 'X'
        break
    case 4:
        gameBoard[2][0] = 'X'
        break
    case 5:
        gameBoard[2][2] = 'X'
        break
    case 6:
        gameBoard[2][4] = 'X'
        break
    case 7:
        gameBoard[4][0] = 'X'
        break
    case 8:
        gameBoard[4][2] = 'X'
        break
    case 9:
        gameBoard[4][4] = 'X'
        break
}

printGameBoard(gameBoard)
//print gameBoard[0][1]
static def printGameBoard( gameBoard){
    //print out the game board using 2 for loops
    //for each array(row) inside of the game board, for each char (c) inside of the row, we are going to print out the symbol
    for(char[] row : gameBoard){
        for(char c : row){
            print c
        }
        println()

    }

}
 `

Answer 1

System.in.newReader().readLine() returns 字符串，在 switch/case 中你尝试将它与 int.

进行比较

简单添加 as int 应该可以解决您的问题

def input = System.in.newReader().readLine() as int

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