1
    2 1 2
  3 2 1 2 3
4 3 2 1 2 3 4
要完全代码谢谢。

int line=5;//行数
for(int i=1;i<=line;i++)
{
    for(int j=line-i;j>0;j--)
    {
        Console.Write(" ");
    }
        for(int j=i;j>0;j--)
    {
        Console.Write(j);
    }
    for(int j=2;j<=i;j++)
    {
        Console.Write(j);
    }
    Console.WriteLine("");   
}

收到的鲜花

• mjx5 于 2010-03-23 22:20 送鲜花  2朵  

不对哎，关键是左边和右边的该怎么写。

int i, j, line=7;
            for (i = 1; i <= line; i++)
            {
                for (j = 1; j <= line - i; j++)
                {
                    Console.Write(" ");
                }
                for (j = i; j >= 1; j--)
                {
                    Console.Write(j);
                }
                if (i > 1)
                    for (j = 2; j <= i; j++)
                    {
                        Console.Write(j);
                    }
                Console.WriteLine();
            }
            Console.ReadKey();

Console.Write（" 1/n
                2 1 2/n
              3 2 1 2 3/n
            4 3 2 1 2 3 4"）

static void Main(string[] args)
        {
            int num = 9;
            for (int i = 1; i <= num; i++)
            {
                for (int j = 1; j <= num - i; j++)
                    Console.Write(" "); //write " "
                for (int k = 1; k <= i- 1; k++)
                    Console.Write(i - k + 1); //write 左半边
                Console.Write("1");  //write 中间的1
                for (int k = 1; k <= i-1; k++)
                    Console.Write(k + 1);//write 右半边
                Console.WriteLine("");
            }
            Console.ReadLine();
        }

原来是杨辉三角啊。。

你牛B。
   这应该算是投机吧！

我的就是大点数就乱了（1-9还行）
          int m;
            int n;
            int x;
            int y;
            int z;

            for (n = 0; n <11; n++)
            {    for (z = 11; z > n; z--)

                    Console.Write("  ");//

                for (m = n -1; m > 1; m--)
                    Console.Write(m+" ");//
                for (x = 1; x < n; x++)

                    Console.Write(" "+x);//
                Console.WriteLine("");
}

            Console .ReadLine ();