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算法示例四：( 邊計(jì)算邊輸出)

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public static void GetYangHuiArray5(int n)  
        {  
            System.Diagnostics.Debug.Assert(n > 0);  
            char space = '\t';  
            Console.WriteLine("n={0}", n);  
            var l = n + 1;  
            var r = l % 2;  
            var h = (l + r) / 2;  
            for (int i = 1; i <= h; i++)  
            {  
                StringBuilder line = new StringBuilder();  
                for (int j = 1; j <= i; j++)  
                {  
                    line.Append(j);  
                    line.Append(space);  
                }  
                for (int j = l - 2 * i + r; j > 0; j--)  
                {  
                    line.Append(i);  
                    line.Append(space);  
                }  
                for (int j = i - r; j > 0; j--)  
                {  
                    line.Append(j);  
                    line.Append(space);  
                }  
                line.Remove(line.Length - 1, 1);  
                Console.WriteLine(line.ToString());  
            }  
            for (int i = h - r; i > 0; i--)  
            {  
                StringBuilder line = new StringBuilder();  
                for (int j = 1; j <= i; j++)  
                {  
                    line.Append(j);  
                    line.Append(space);  
                }  
                for (int j = l - 2 * i + r; j > 0; j--)  
                {  
                    line.Append(i);  
                    line.Append(space);  
                }  
                for (int j = i - r; j > 0; j--)  
                {  
                    line.Append(j);  
                    line.Append(space);  
                }  
                line.Remove(line.Length - 1, 1);  
                Console.WriteLine(line.ToString());  
            }  
        } 

算法示例五： (其他類似算法)

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public static void GetYangHuiArray3(int n)  
        {  
            for (int i = 1; i <= n; i++)  
            {  
                for (int j = 1; j <= n; j++)  
                {  
                    GetMin(i, j);  
                }  
                for (int j = n - 1; j >= 1; j--)  
                {  
                    GetMin(i, j);  
                }  
                Console.WriteLine();  
            }  
            for (int i = n - 1; i >= 1; i--)  
            {  
                for (int j = 1; j <= n; j++)  
                {  
                    GetMin(i, j);  
                }  
                for (int j = n - 1; j >= 1; j--)  
                {  
                    GetMin(i, j);  
                }  
                Console.WriteLine();  
            }  
        } 

調(diào)用示例：

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public static void Main(string[] args)  
        {  
            Console.WriteLine("input the rownum:");  
            int input = int.Parse(Console.ReadLine());  
            while (input > 0)  
            {  
                Console.WriteLine("n=" + input + ";");  
                GetYangHuiArray2(input);  
                input = int.Parse(Console.ReadLine());  
            }  
        } 

效果：

拋磚，期望有更多的思路分享。

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助人等于自助!   3w@live.cn

轉(zhuǎn)載：http://blog.csdn.net/downmoon/archive/2010/07/05/5712679.aspx

本文鏈接：http://www.95time.cn/tech/program/2010/7784.asp　

出處：邀月的博客周記
責(zé)任編輯：bluehearts

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