C#正则表达式基础 [0-9][0-9] 检测字符串是否存在两个相邻的数字

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Net;
 5 using System.Text;
 6 using System.Text.RegularExpressions;
 7 using System.Threading.Tasks;
 8 
 9 namespace ConsoleApplication7
10 {
11     class Program
12     {
13         static void Main(string[] args)
14         {
15                                        //检测字符串是否存在两个相邻的数字
16             string regularExpression = "[0-9][0-9]";
17             Regex rg = new Regex(regularExpression);
18 
19             string [] contents = { "01", "12a", "a3", "a33" };
20             for (int i = 0; i < contents.Length; i++)
21             {
22                 if(rg.IsMatch(contents[i]))
23                 {
24                     Console.WriteLine(contents[i]+"符合正则表达式");
25                 }
26                 else
27                 {
28                     Console.WriteLine(contents[i] + "不符合正则表达式");
29 
30                 }
31             }
32 
33             Console.ReadKey();
34         }
35     }
36 }