Question

您好我正在创建一个Magic Square游戏，我创建了一个2D数组来存储零并创建一个3 x 3的板，看起来像这样...

0 0 0
0 0 0
0 0 0

然后我创建了一个for循环，要求用户输入一个[0,0]到[2,2]的整数，它结束所以它看起来像这样，假设它被输入1-9 ..

1 2 3
4 5 6
7 8 9

我的问题是如何让用户只输入1-9的号码，只能使用一次号码？

我尝试过：

尝试使用bool阵列，但我不知道如何设置

Answer 1

简单地使用以前选择的数字列表

var previousNumbers = new List<int>(); // Create list of previous numbers entered
int number;

Console.WriteLine($"Enter new number from 1 to 9 or 0 to exit.");

var valueEntered = Console.ReadKey().KeyChar;

// try converting key press to an int and check its not 0
while (int.TryParse(valueEntered.ToString(), out number) && number != 0)
{
   if (previousNumbers.Contains(number))
   {
      Console.WriteLine(" has already been entered, try again.");
   }
   else
   {
      // add you number to the list 
      previousNumbers.Add(number); 
      Console.WriteLine(" is a valid number and hasn't been used.");
   }
   // get next value and do the hokey pokey 
   valueEntered = Console.ReadKey().KeyChar; 
}

由于受欢迎的需求，这是另一种方式

var previousNumbers = new HashSet<int>(); // Create list of previous numbers entered
int number;

Console.WriteLine($"Enter new number from 1 to 9 or 0 to exit.");

// try converting it to in, and check its not 0
while (int.TryParse(Console.ReadLine(), out number) && number >= 1 && number <= 9)
{
   if (!previousNumbers.Add(number))
   {
      Console.WriteLine($"{number} has already been entered, try again.");
   }
   else
   {
      Console.WriteLine($"{number} is a valid number and hasn't been used.");
   }
}

Answer 2

只需检查号码并列出清单。

       ActiveChart.ApplyChartTemplate ( _
    "C:\Users\XXXXX\AppData\Roaming\Microsoft\Templates\Charts\1.crtx")

如何让用户只使用一次C＃

2 个答案: