c# 列印等腰直角三角型

using System;<br />using System.Collections.Generic;<br />using System.Text;<br />namespace ConsoleApplication1<br />{<br /> class Program<br /> {<br /> static void Main(string[] args)<br /> {<br /> int w = 4;<br /> int c = w / 2 + 1;</p><p> String temp = "";<br /> for (int i = 0; i < w; i++)<br /> {<br /> if (i == 0)<br /> {<br /> temp = Convert.ToString(c);<br /> }<br /> else<br /> {<br /> for (int k = 1; k <= i; k++)<br /> {<br /> temp += Convert.ToString(c - k) + ",";<br /> }<br /> for (int k = 1; k <= i; k++)<br /> {<br /> temp += Convert.ToString(c + k) + ",";<br /> }<br /> temp += Convert.ToString(c);<br /> }<br /> for (int j = 0; j < 2*w; j++)<br /> {<br /> string[] m = temp.Split(new char[1] { ',' });<br /> string str = string.Join("",m);<br /> if (str.IndexOf(Convert.ToString(j)) > -1)<br /> {<br /> Console.Write("* ");<br /> }<br /> else {</p><p> Console.Write(" ");<br /> }<br /> }<br /> temp = "";<br /> Console.WriteLine();<br /> }</p><p> }<br /> }<br />}<br />