用迭代解决C＃

Question

我需要在控制台中编写代码，它会使行的编号出现在它自己的行上，也显示在行上的位置。我的程序只输出一行*****，我似乎无法让它更多。帮助将提前

eg 1***** 
    *2**** 
    **3*** 
    ***4** 

我现在有惊人的感谢堆，

static void Main(string[] args) 
{ 
    int n = 0; 
    string s = ""; 

    //check if 2 args 
    if (args.Length == 2) 
    { 
     if (int.TryParse(args[0], out n)) 
     { 
      //successful parse, so use n 
      s = args[1]; //second argument is character 

      //draw a line of characters 
      DrawChars(n, s); 
     } 
     else 
     { 
      //unsuccessful parse, so no n value 
     } 
    } 

    //wait for user to have read output 
    Console.WriteLine(); 
    Console.Write("Press enter to finish:"); 
    Console.ReadLine(); 
} 

/// <summary> 
/// Method to draw a line of characters 
/// </summary> 
/// <param name="n">number of characters to draw</param> 
/// <param name="s">character to draw n times</param> 
static void DrawChars(int n, string s) 
{ 
    for (int i = 1; i <= n; i++) 
    { 
     Console.Write(s); 
    } 
    Console.WriteLine(); 
} 

Answer 1

您当前的代码只打印一行文字。您需要一个外部循环来打印多行，并且需要一个条件检查来确定是否在行的相应列中打印行号或字符串。

更改DrawChars(int n, string s)到

/// <summary> 
/// Method to draw a line of characters 
/// </summary> 
/// <param name="n">number of characters to draw</param> 
/// <param name="s">character to draw n times</param> 
static void DrawChars(int n, string s) 
{ 
    for (int row = 1; row <= n; row++) 
    { 
     for (int col = 1; col <= n; col++) 
     { 
      Console.Write(col == row ? col.ToString() : s); 
     } 
     Console.WriteLine(); 
    } 
} 

用法：

DrawChars(5, "*"); 

结果：

1**** 
*2*** 
**3** 
***4* 
****5 

Answer 2

如果我能正确理解您的要求，您可以使用嵌套的for循环打印：

static void Main() 
     { 
      const int maxLineNumber = 5; 
      for (var itr = 1; itr <= maxLineNumber; itr++) 
      { 
       for (var innerItr = 1; innerItr <= maxLineNumber; innerItr++) 
       { 
        if (innerItr == itr) 
        { 
         Console.Write(itr); 
        } 
        else 
        { 
         Console.Write("*"); 
        } 
       } 
       Console.WriteLine(); 
      } 
      Console.ReadLine(); 
     } 

它会打印：

1**** 
*2*** 
**3** 
***4* 
****5