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  • C#常用算法

    冒泡排序

     

     1 namespace BubbleSorter
     2 
     3 {
     4 
     5     public class BubbleSorter
     6 
     7     {
     8 
     9         public void Sort(int[] list)
    10 
    11         {
    12 
    13             int i, j, temp;
    14 
    15             bool done = false;
    16 
    17             j = 1;
    18 
    19             while ((j < list.Length) && (!done))
    20 
    21             {
    22 
    23                 done = true;
    24 
    25                 for (i = 0; i < list.Length - j; i++)
    26 
    27                 {
    28 
    29                     if (list[i] > list[i + 1])
    30 
    31                     {
    32 
    33                         done = false;
    34 
    35                         temp = list[i];
    36 
    37                         list[i] = list[i + 1];
    38 
    39                         list[i + 1] = temp;
    40 
    41                     }
    42 
    43                 }
    44 
    45                 j++;
    46 
    47             }
    48 
    49         }
    50 
    51     }
    52 
    53     public class MainClass
    54 
    55     {
    56 
    57         public static void Main()
    58 
    59         {
    60 
    61             int[] iArrary = new int[] { 1, 5, 13, 6, 10, 55, 99, 2, 87, 12, 34, 75, 33, 47 };
    62 
    63             BubbleSorter sh = new BubbleSorter();
    64 
    65             sh.Sort(iArrary);
    66 
    67             for (int m = 0; m < iArrary.Length; m++)
    68 
    69                 Console.Write("{0}", iArrary[m]);
    70 
    71             Console.WriteLine();
    72 
    73         }
    74 
    75     }
    76 
    77 }

     

    希尔排序

    希尔排序是将组分段,进行插入排序.

     

     1 namespace ShellSorter
     2 
     3 {
     4 
     5     public class ShellSorter
     6 
     7     {
     8 
     9         public void Sort(int[] list)
    10 
    11         {
    12 
    13             int inc;
    14 
    15             for (inc = 1; inc <= list.Length / 9; inc = 3 * inc + 1) ;
    16 
    17             for (; inc > 0; inc /= 3)
    18 
    19             {
    20 
    21                 for (int i = inc + 1; i <= list.Length; i += inc)
    22 
    23                 {
    24 
    25                     int t = list[i - 1];
    26 
    27                     int j = i;
    28 
    29                     while ((j > inc) && (list[j - inc - 1] > t))
    30 
    31                     {
    32 
    33                         list[j - 1] = list[j - inc - 1];
    34 
    35                         j -= inc;
    36 
    37                     }
    38 
    39                     list[j - 1] = t;
    40 
    41                 }
    42 
    43             }
    44 
    45         }
    46 
    47     }
    48 
    49     public class MainClass
    50 
    51     {
    52 
    53         public static void Main()
    54 
    55         {
    56 
    57             int[] iArrary = new int[] { 1, 5, 13, 6, 10, 55, 99, 2, 87, 12, 34, 75, 33, 47 };
    58 
    59             ShellSorter sh = new ShellSorter();
    60 
    61             sh.Sort(iArrary);
    62 
    63             for (int m = 0; m < iArrary.Length; m++)
    64 
    65                 Console.Write("{0}", iArrary[m]);
    66 
    67             Console.WriteLine();
    68 
    69         }
    70 
    71     }
    72 
    73 } 

     

     

    插入排序

     1 namespace InsertionSorter
     2 
     3 {
     4 
     5     public class InsetionSorter
     6 
     7     {
     8 
     9         public void Sort(int[] list)
    10 
    11         {
    12 
    13             for (int i = 1; i < list.Length; i++)
    14 
    15             {
    16 
    17                 int t = list[i];
    18 
    19                 int j = i;
    20 
    21                 while ((j > 0) && (list[j - 1] > t))
    22 
    23                 {
    24 
    25                     list[j] = list[j - 1];
    26 
    27                     --j;
    28 
    29                 }
    30 
    31                 list[j] = t;
    32 
    33             }
    34 
    35         }
    36 
    37     }
    38 
    39     public class MainClass
    40 
    41     {
    42 
    43         public static void Main()
    44 
    45         {
    46 
    47             int[] iArrary = new int[] { 1, 13, 3, 6, 10, 55, 98, 2, 87, 12, 34, 75, 33, 47 };
    48 
    49             InsertionSorter ii = new InsertionSorter();
    50 
    51             ii.Sort(iArrary);
    52 
    53             for (int m = 0; m < iArrary.Length; m++)
    54 
    55                 Console.Write("{0}", iArrary[m]);
    56 
    57             Console.WriteLine();
    58 
    59         }
    60 
    61     }
    62 
    63 } 
    64 
    65  

    选择排序

     

     1 namespace SelectionSorter
     2 
     3 {
     4 
     5     public class SelectionSorter
     6 
     7     {
     8 
     9         private int min;
    10 
    11         public void Sort(int[] list)
    12 
    13         {
    14 
    15             for (int i = 0; i < list.Length - 1; i++)
    16 
    17             {
    18 
    19                 min = i;
    20 
    21                 for (int j = i + 1; j < list.Length; j++)
    22 
    23                 {
    24 
    25                     if (list[j] < list[min])
    26 
    27                         min = j;
    28 
    29                 }
    30 
    31                 int t = list[min];
    32 
    33                 list[min] = list[i];
    34 
    35                 list[i] = t;
    36 
    37             }
    38 
    39         }
    40 
    41     }
    42 
    43     public class MainClass
    44 
    45     {
    46 
    47         public static void Main()
    48 
    49         {
    50 
    51             int[] iArrary = new int[] { 1, 5, 3, 6, 10, 55, 9, 2, 87, 12, 34, 75, 33, 47 };
    52 
    53             SelectionSorter ss = new SelectionSorter();
    54 
    55             ss.Sort(iArrary);
    56 
    57             for (int m = 0; m < iArrary.Length; m++)
    58 
    59                 Console.Write("{0}", iArrary[m]);
    60 
    61             Console.WriteLine();
    62 
    63         }
    64 
    65     }
    66 
    67 }

     

     

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  • 原文地址:https://www.cnblogs.com/sidecore/p/2868466.html
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