c#编程题目

Question

c#编程实现：输入一个int32类型参数n,n>1

按如下的例子控制台输出：

n=1:

1 1

1 1

n=2:

1 1 1

1 2 1

1 1 1

n=3:

1 1 1 1

1 2 2 1

1 2 2 1

1 1 1 1

n=4:

1 1 1 1 1

1 2 2 2 1

1 2 3 2 1

1 2 2 2 1

1 1 1 1 1

Answer 1

12 static void Fun(int n) 3 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp;{ 4 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;System.Diagnostics.Debug.Assert(n > 0); 5 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Console.WriteLine("n={0}", n); 6 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;var l = n + 1; 7 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;var r = l % 2; 8 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;var h = (l + r) / 2; 9 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int i = 1; i <= h; i++)10 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{11 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;StringBuilder line = new StringBuilder();12 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int j = 1; j <= i; j++)13 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{14 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(j);15 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(' ');16 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}17 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int j = l - 2 * i + r; j > 0; j--)18 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{19 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(i);20 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(' ');21 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}22 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int j = i-r; j > 0; j--)23 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{24 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(j);25 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(' ');26 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}27 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Remove(line.Length - 1, 1);28 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Console.WriteLine(line.ToString());29 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}30 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int i = h-r; i > 0; i--)31 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{32 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;StringBuilder line = new StringBuilder();33 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int j = 1; j <= i; j++)34 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{35 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(j);36 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(' ');37 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}38 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int j = l - 2 * i + r; j > 0; j--)39 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{40 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(i);41 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(' ');42 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}43 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;for (int j =i- r; j > 0; j--)44 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{45 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(j);46 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Append(' ');47 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}48 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;line.Remove(line.Length - 1, 1);49 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Console.WriteLine(line.ToString());50 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}51 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp;}