两个for循环打印菱形

Question

今天面试遇到一题求大侠们指点下
---*---
-*-*-*-
*-*-*-*
-*-*-*-
---*---
用两个for循环怎么做出来啊？求各位大侠指点

Answer 1

http://topic.csdn.net/u/20091213/14/46c6e3cd-1313-4aa0-ae22-1e1b1fd41112.html

Answer 2

本帖最后由 caozhy 于 2012-10-30 01:40:17 编辑

  

Answer 3

string a = @"---*---
-*-*-*-
*-*-*-*
-*-*-*-
---*---";            Console.WriteLine(a);
ha,ha..

Answer 4

gagastring a = @"---*---
-*-*-*-
*-*-*-*
-*-*-*-
---*---";
for(int i=0;i<1;i++)
{
    for(int j=0;j<1;j++)
       {
          Console.WriteLine(a);
}
}

Answer 5

            bool flag = false;
            for (int i = 0; i < 5; i++)
            {
                for (int j = 0; j < 7; j++)
                {
                    if (i == 0 || i == 4)
                    {
                        if (j == 3)
                            Console.Write("*");
                        else
                            Console.Write("-");
                    }
                    else if (flag)
                    {
                        Console.Write("-");
                    }
                    else
                    {
                        Console.Write("*");
                    }
                    flag = !flag;
                }
                Console.WriteLine();
            }
代码不是很优雅，但能出正确结果。

Answer 6

研究了下，写了个 通用的给你不用 BOOL 的变量。static void Main(string[] args)
        {
            int n = 5;
            int k = 7;
            int temp = k / 2 + 1;
            for (int r = 1; r <= n; r++)
            {
                for (int c = 1; c <= k; c++)
                {
                    if ((r == 1 || r == n))
                    {
                        if (c == temp)
                        {
                            Console.Write("*");
                        }
                        else
                        {
                            Console.Write("-");
                        }
                    }
                    else
                    {
                        if (r % 2 == 0)
                        {
                            if (c % 2 == 1)
                                Console.Write("-");
                            else
                                Console.Write("*");
                        }
                        else
                        {
                            if ( r % 2 == 1 && c % 2 == 1)
                                Console.Write("*");
                            else
                                Console.Write("-");
                        }
                    }
                }
                Console.WriteLine();
            }
        }
输出:---*---
-*-*-*-
*-*-*-*
-*-*-*-
---*---