数组冒泡排序，文件读取，数据库读取，string类型的int数组转换成int数组

排序方式(枚举)

1  public enum SortBy
2     {
3         Asc,
4         Desc
5     }

数组冒泡排序方法

 1  public class SortEntity
 2     {
 3         public static int[] SortArray(int[] array,SortBy sortby)
 4         {
 5             int flag;
 6             switch (sortby)
 7             {
 8                 case SortBy.Asc:
 9                     for (int i = 0; i < array.Length - 1; i++)
10                     {
11                         for (int j = 0; j < array.Length - 1 - i; j++)
12                         {
13                             if (array[j] < array[j + 1])
14                             {
15                                 flag = array[j];
16                                 array[j] = array[j + 1];
17                                 array[j + 1] = flag;
18                             }
19                         }
20                     }
21                     break;
22                 case SortBy.Desc:
23                     for (int i = 0; i < array.Length - 1; i++)
24                     {
25                         for (int j = 0; j < array.Length - 1 - i; j++)
26                         {
27                             if (array[j] > array[j + 1])
28                             {
29                                 flag = array[j];
30                                 array[j] = array[j + 1];
31                                 array[j + 1] = flag;
32                             }
33                         }
34                     }
35                     break;
36                 default:
37                     break;
38             }
39
40             return array;
41         }
42     }

String类型的int数组转换成int数组

 1 public class ArrayHelper
 2     {
 3         public static int[] GetIntArrayFromString(string StringStr)
 4         {
 5             string[] array = StringStr.Split(‘,‘);
 6             int Flag; int[] ArrayIntNum = new int[array.Length];
 7             for (int i = 0; i < array.Length - 1; i++)
 8             {
 9                 if (int.TryParse(array[i], out Flag))
10                 {
11                     ArrayIntNum[i] = Flag;
12                 }
13                 else
14                 {
15                     throw new Exception("内容中含有非int型数据");
16                 }
17             }
18             return ArrayIntNum;
19         }
20     }

文件读取数组

 1  public  class FileEntity
 2     {
 3         public  string address { get; set; }
 4         private  string ReadContent()
 5         {
 6             string Content = string.Empty;
 7             if (File.Exists(this.address))
 8             {
 9                 Content = File.ReadAllText(this.address);
10
11             }
12             return Content;
13         }
14         public int[] GetArray()
15         {
16             return ArrayHelper.GetIntArrayFromString(ReadContent());
17         }
18     }

测试方法

1 public void Test()
2         {
3             int[] intArray = new int[] { 1, 2, 3, 4, 5 };
4             int[] txtArray = new FileEntity() { address = @"C:\TEST.TXT" }.GetArray();
5             int[] dataArray = new DataBaseEntity().GetArray();
6             intArray = SortEntity.SortArray(intArray, SortBy.Asc);
7             txtArray = SortEntity.SortArray(txtArray, SortBy.Asc);
8             dataArray = SortEntity.SortArray(dataArray, SortBy.Asc);
9         }