2

我在下面的代码中遇到了问题。

fun main() {
val table = mutableListOf(
    mutableListOf(' ', ' ', ' '),
    mutableListOf(' ', ' ', ' '),
    mutableListOf(' ', ' ', ' ')
)

println("---------")
println("| " + table[0][0] + " " + table[0][1] + " " + table[0][2] + " |")
println("| " + table[1][0] + " " + table[1][1] + " " + table[1][2] + " |")
println("| " + table[2][0] + " " + table[2][1] + " " + table[2][2] + " |")
println("---------")

print("Enter the coordinates: ")
var coordinates = readLine()!!.split(" ").toMutableList()
var x = coordinates[0].toInt()
var y = coordinates[1].toInt()


while (x > 3 || x < 1 || y > 3 || y < 1) {
    println("Coordinates should be from 1 to 3!")
    print("Enter the coordinates: ")
    coordinates = readLine()!!.split(" ").toMutableList()
    x = coordinates[0].toInt()
    y = coordinates[1].toInt()
}

while (table[x-1][y-1] == 'X' || table[x-1][y-1] == 'O') {
    println("This cell is occupied! Choose another one!")
    print("Enter the coordinates: ")
    coordinates = readLine()!!.split(" ").toMutableList()
    x = coordinates[0].toInt()
    y = coordinates[1].toInt()
}

table[x-1][y-1] = 'X'

println("---------")
println("| " + table[0][0] + " " + table[0][1] + " " + table[0][2] + " |")
println("| " + table[1][0] + " " + table[1][1] + " " + table[1][2] + " |")
println("| " + table[2][0] + " " + table[2][1] + " " + table[2][2] + " |")
println("---------")


if (table[0][0] == 'X' && table[0][1] == 'X' && table[0][2] == 'X' ||
    table[1][0] == 'X' && table[1][1] == 'X' && table[1][2] == 'X' ||
    table[2][0] == 'X' && table[2][1] == 'X' && table[2][2] == 'X' ||
    table[0][0] == 'X' && table[1][0] == 'X' && table[2][0] == 'X' ||
    table[0][1] == 'X' && table[1][1] == 'X' && table[2][1] == 'X' ||
    table[0][2] == 'X' && table[1][2] == 'X' && table[2][2] == 'X' ||
    table[0][0] == 'X' && table[1][1] == 'X' && table[2][2] == 'X' ||
    table[2][0] == 'X' && table[1][1] == 'X' && table[0][2] == 'X'
) {
    println("X wins")
} else if (table[0][0] == 'O' && table[0][1] == 'O' && table[0][2] == 'O' ||
    table[1][0] == 'O' && table[1][1] == 'O' && table[1][2] == 'O' ||
    table[2][0] == 'O' && table[2][1] == 'O' && table[2][2] == 'O' ||
    table[0][0] == 'O' && table[1][0] == 'O' && table[2][0] == 'O' ||
    table[0][1] == 'O' && table[1][1] == 'O' && table[2][1] == 'O' ||
    table[0][2] == 'O' && table[1][2] == 'O' && table[2][2] == 'O' ||
    table[0][0] == 'O' && table[1][1] == 'O' && table[2][2] == 'O' ||
    table[2][0] == 'O' && table[1][1] == 'O' && table[0][2] == 'O'
) {
    println("O wins")
}

}

我可以检查输入是否小于或大于 3（坐标）并且还能够检查该字段是否被占用。但是如何检查输入不是带有while循环的字符串，例如检查字段占用和坐标。提前致谢！

4

2 回答 2

3

我建议这样做

x = coordinates[0].toIntOrNull() ?: 99
y = coordinates[1].toIntOrNull() ?: 99

与toInt()and的区别toIntOrNull()在于，toIntOrNull()当它无法将其转换为 Int 时不会引发异常，而是会返回 null 。这可以使用 elvis 运算符重定向到备用号码?:。在这里，您可以放置​​任何不在您要求的 1-3 范围内的内容。我只是选择了 99 来证明这一点。

于 2021-11-24T10:58:42.017 回答
1

我是这样做的：

print("Enter the coordinates: ")
var coordinates = readLine()!!.split(" ").toMutableList()


while (coordinates[0].length > 1 || coordinates[1].length > 1 || coordinates[0].length > 1 && coordinates[1].length > 1 ) {
    println("You should enter numbers!")
    print("Enter the coordinates: ")
    coordinates = readLine()!!.split(" ").toMutableList()
}
于 2021-11-24T13:39:44.033 回答