1、判断回文字符串
1 class Program
2 {
3 /// <summary>
4 /// 反转字符串
5 /// </summary>
6 /// <param name="strOrignial">原字符串</param>
7 /// <returns>反转之后的字符串</returns>
8 private string RverseString(string strOrignial)
9 {
10 string strResult = null;
11 for (int i = strOrignial.Length-1; i >= 0; i--)
12 {
13 string strTemp = strOrignial.Substring(i, 1);
14 strResult = strResult + strTemp;//字符串累加
15 }
16 return strResult;
17 }
18 //判断是否是回文字符串（如：rotor）
19 private void Text()
20 {
21 string strOrstr = "rotor";
22 string strRverseResult = RverseString(strOrstr);
23 if (strRverseResult==strOrstr)
24 {
25 Console.WriteLine("是回文字符串");
26 }
27 else
28 {
29 Console.WriteLine("不是回文字符串");
30 }
31 }
32 static void Main(string[] args)
33 {
34 Program p = new Program();
35 p.Text();
36 Console.ReadKey();
37 }
38 }
2、输出1-256的所有回文字符串
1 class Program
2 {
3 /// <summary>
4 /// 反转字符串
5 /// </summary>
6 /// <param name="strOrignial">原字符串</param>
7 /// <returns>反转之后的字符串</returns>
8 private string RverseString(string strOrignial)
9 {
10 string strResult = null;
11 for (int i = strOrignial.Length-1; i >= 0; i--)
12 {
13 string strTemp = strOrignial.Substring(i, 1);
14 strResult = strResult + strTemp;//字符串累加
15 }
16 return strResult;
17 }
18 //判断是否是回文字符串（如：rotor）
19 private bool Text( string strOrstr)
20 {
21 string strRverseResult = RverseString(strOrstr);
22 if (strRverseResult==strOrstr)
23 {
24 return true;
25 }
26 else
27 {
28 return false;
29 }
30 }
31 //输出1-256的所有回文字符串
32 private void Text1()
33 {
34 for (int i = 1; i < 257; i++)
35 {
36 //判断i是否为回文字符串
37 bool bb= Text(i.ToString());
38 if (bb)
39 {
40 Console.WriteLine(i);
41 }
42 }
43 }
44 static void Main(string[] args)
45 {
46 Program p = new Program();
47 p.Text1();
48 Console.ReadKey();
49 }
50 }
