C#數組排序的兩種經常使用辦法。本站提示廣大學習愛好者:(C#數組排序的兩種經常使用辦法)文章只能為提供參考,不一定能成為您想要的結果。以下是C#數組排序的兩種經常使用辦法正文
本文實例講述了C#數組排序的兩種經常使用辦法。分享給年夜家供年夜家參考。詳細以下:
1.第一個例子
界說代碼
#region Array數組排序1 public class Pigeon : IComparable<Pigeon> //類元素自己繼續比擬接口 { int XValue; int YValue; public string BatchNo { get; set; } public int CompareTo(Pigeon other) { if (other == null) throw new ArgumentNullException("比擬參數為空"); //按第三個字符比擬 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; //前往-1,X排在Y的後面 } else { return 1; //前往1,X排在Y的前面 } } } #endregion
測試代碼
#region 測試Array數組排序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
界說代碼
#region Array數組排序 public class MyBatch //數組元素類 { public string BatchNo { get; set; } } public enum CompareType //比擬類型列舉 { ThreeChar =0, FourChar=1 } public class MyBatchCompare:IComparer<MyBatch> //界說了一個比擬類 { private CompareType compareType;//界說排序類型 public MyBatchCompare(CompareType compareType) { //結構函數中初始化比擬類型 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: //按第三個字符比擬從小到年夜排序 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; //前往-1,X排在Y的後面 } else { return 1; //前往1,X排在Y的前面 } case CompareType.FourChar: //按第四個字符比擬從小到年夜排序 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; //前往-1,X排在Y的後面 } else { return 1; //前往1,X排在Y的前面 } default: throw new ArgumentException("比擬類型參數毛病"); } } } #endregion
測試代碼
#region Array數組排序 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年夜排 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年夜排序 Array.Sort(batchs, new MyBatchCompare(CompareType.FourChar)); ResultMsg = ""; foreach (MyBatch o in batchs) { ResultMsg += o.BatchNo + "\r\n"; } MessageBox.Show(ResultMsg); } #endregion
願望本文所述對年夜家的C#法式設計有所贊助。