C#數(shù)組排序的兩種常用方法

更新時間：2015年05月15日 11:17:41 作者：永遠愛好寫程序

這篇文章主要介紹了C#數(shù)組排序的兩種常用方法,實例分析了C#操作數(shù)組的相關(guān)技巧,需要的朋友可以參考下

本文實例講述了C#數(shù)組排序的兩種常用方法。分享給大家供大家參考。具體如下：

1.第一個例子

定義代碼

#region Array數(shù)組排序1
public class Pigeon : IComparable<Pigeon>
//類元素本身繼承比較接口
{
int XValue;
int YValue;
public string BatchNo { get; set; }
public int CompareTo(Pigeon other)
{
  if (other == null)
 throw new ArgumentNullException("比較參數(shù)為空");
  //按第三個字符比較
  XValue = Convert.ToInt32(this.BatchNo.Substring(2, 1));
  YValue = Convert.ToInt32(other.BatchNo.Substring(2, 1));
  if (XValue == YValue)
  {
 return 0;
  }
  else if (XValue < YValue)
  {
 return -1;   //返回-1,X排在Y的前面
  }
  else
  {
 return 1;    //返回1,X排在Y的后面
  }
}
}
#endregion

測試代碼

#region 測試Array數(shù)組排序1
private void button3_Click(object sender, EventArgs e)
{
  Pigeon[] pigeons = new Pigeon[]{
 new Pigeon(){BatchNo="1256"},
 new Pigeon(){BatchNo="1236"},
 new Pigeon(){BatchNo="1276"},
 new Pigeon(){BatchNo="1216"}
  };
  Array.Sort(pigeons);
  string ResultMsg = "";
  foreach (Pigeon o in pigeons)
  {
 ResultMsg += o.BatchNo + "\r\n";
  }
  MessageBox.Show(ResultMsg);
}
#endregion

1.第二個例子

定義代碼

#region Array數(shù)組排序
public class MyBatch   //數(shù)組元素類
{
public string BatchNo { get; set; }
}
public enum CompareType   //比較類型枚舉
{
ThreeChar =0,
FourChar=1
}
public class MyBatchCompare:IComparer<MyBatch>
//定義了一個比較類
{
private CompareType compareType;//定義排序類型
public MyBatchCompare(CompareType compareType)
{
  //構(gòu)造函數(shù)中初始化比較類型
  this.compareType = compareType;
}
public int Compare(MyBatch x, MyBatch y)
{
  int XValue;
  int YValue;
  if (x == null) throw new ArgumentNullException("x值為空");
  if (y == null) throw new ArgumentNullException("y值為空");
  switch (compareType)
  {          
 case CompareType.ThreeChar:
   //按第三個字符比較從小到大排序
   XValue = Convert.ToInt32(x.BatchNo.Substring(2,1));
   YValue = Convert.ToInt32(y.BatchNo.Substring(2,1));
   if (XValue == YValue)
   {
 return 0;
   }
   else if (XValue < YValue)
   {
 return -1;   //返回-1,X排在Y的前面
   }
   else
   {
 return 1;    //返回1,X排在Y的后面
   }
 case CompareType.FourChar:
   //按第四個字符比較從小到大排序
   XValue = Convert.ToInt32(x.BatchNo.Substring(3,1));
   YValue = Convert.ToInt32(y.BatchNo.Substring(3,1));
   if (XValue == YValue)
   {
 return 0;
   }
   else if (XValue < YValue)
   {
 return -1;   //返回-1,X排在Y的前面
   }
   else
   {
 return 1;    //返回1,X排在Y的后面
   }
 default:
   throw new ArgumentException("比較類型參數(shù)錯誤");
  }
}
}
#endregion

測試代碼

#region Array數(shù)組排序
private void button2_Click(object sender, EventArgs e)
{
  MyBatch[] batchs ={
   new MyBatch(){BatchNo="1234"},
   new MyBatch(){BatchNo="1263"},
   new MyBatch(){BatchNo="1218"},
   new MyBatch(){BatchNo="1242"}
    };
  //按第三個字符從小到大排
  Array.Sort(batchs,new MyBatchCompare(CompareType.ThreeChar));
  string ResultMsg = "";
  foreach (MyBatch o in batchs)
  {
 ResultMsg += o.BatchNo + "\r\n";
  }
  MessageBox.Show(ResultMsg);
  //按第四個字符從小到大排序
  Array.Sort(batchs, new MyBatchCompare(CompareType.FourChar));
  ResultMsg = "";
  foreach (MyBatch o in batchs)
  {
 ResultMsg += o.BatchNo + "\r\n";
  }
  MessageBox.Show(ResultMsg);
}
#endregion

希望本文所述對大家的C#程序設(shè)計有所幫助。

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