/// <summary>/// 目标接口：抽象成绩操作类/// </summary>public interface IScoreOperation{// 成绩排序int[] Sort(int[] array);// 成绩查找int Search(int[] array, int key);}

    /// <summary>/// 适配者A：快速排序类/// </summary>public class QuickSortHelper{public int[] QuickSort(int[] array){Sort(array, 0, array.Length - 1);return array;}public void Sort(int[] array, int p, int r){int q = 0;if (p < r){q = Partition(array, p, r);Sort(array, p, q - 1);Sort(array, q + 1, r);}}public int Partition(int[] array, int p, int r){int x = array[r];int j = p - 1;for (int i = p; i <= r - 1; i++){if (array[i] <= x){j++;Swap(array, j, i);}}Swap(array,j+1,r);return j + 1;}public void Swap(int[] array, int i, int j){int t = array[i];array[i] = array[j];array[j] = t;}}

    public class BinarySearchHelper{public int BinarySearch(int[] array, int key){int low = 0;int high = array.Length - 1;while (low <= high){int mid = (low + high) / 2;int midVal = array[mid];if (midVal < key){low = mid + 1;}else if (midVal > key){high = mid - 1;}else{return 1;   // 找到元素返回1
                }}return -1;  // 未找到元素返回-1
        }}

    /// <summary>/// 适配器：成绩操作适配器类/// </summary>public class OperationAdapter : IScoreOperation{private QuickSortHelper sortTarget;private BinarySearchHelper searchTarget;public OperationAdapter(){sortTarget = new QuickSortHelper();searchTarget = new BinarySearchHelper();}public int Search(int[] array, int key){return searchTarget.BinarySearch(array, key);}public int[] Sort(int[] array){return sortTarget.QuickSort(array);}}

    public class Client{public static void Main(string[] args){IScoreOperation operation = (IScoreOperation)AppConfigHelper.GetAdapterInstance();if (operation == null){return;}int[] scores = { 84, 76, 50, 69, 90, 91, 88, 96 };int[] result;int score;Console.WriteLine("测试成绩排序结果：");result = operation.Sort(scores);foreach (int s in result){Console.Write("{0},", s.ToString());}Console.WriteLine();Console.WriteLine("查找是否有90分的人：");score = operation.Search(scores, 90);if (score == -1){Console.WriteLine("抱歉，这个真没找到~~~");}else{Console.WriteLine("恭喜，的确存在90分选手~~~");}Console.WriteLine("查找是否有92分的人：");score = operation.Search(scores, 92);if (score == -1){Console.WriteLine("抱歉，这个真没找到~~~");}else{Console.WriteLine("恭喜，的确存在92分选手~~~");}Console.ReadKey();}}

<?xml version="1.0" encoding="utf-8" ?>
<configuration><appSettings><add key="AdapterName" value="Manulife.ChengDu.DesignPattern.Adapter.OperationAdapter, Manulife.ChengDu.DesignPattern.Adapter" /></appSettings>
</configuration>

    public class AppConfigHelper{public static string GetAdapterName(){string factoryName = null;try{factoryName = System.Configuration.ConfigurationManager.AppSettings["AdapterName"];}catch (Exception ex){Console.WriteLine(ex.Message);}return factoryName;}public static object GetAdapterInstance(){string assemblyName = AppConfigHelper.GetAdapterName();Type type = Type.GetType(assemblyName);var instance = Activator.CreateInstance(type);return instance;}}

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作者：周旭龙

出处：http://edisonchou.cnblogs.com

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