有10位评委对跳水运动员做评分，编写C#程序，计算去除最大得分和最小得分之后的平均得分 作为运动员的跳水成绩。

interface IMark

using System.Collections.Generic;namespace ConsoleApp1{    /// 
    /// 评分接口    /// 
    interface IMark    {        Mark GetMaxScore(List list_Marks);        Mark GetMinScore(List list_Marks);        /// 
        /// 获取所有评分        /// 
        /// 
               List GetAllMarks(int athleteId);        /// 
        /// 获取除最大得分和最小得分之后的平均得分        /// 
        /// 
                float GetAvgScoreExceptFirstAndLast();    }}

class Mark

namespace ConsoleApp1{    /// 
    /// 评分实体    /// 
    public class Mark    {        public int Id;        public int JuryId;        public int AthleteId;        public float Score;    }}

class MarkService

using System.Collections.Generic;using System.Linq;namespace ConsoleApp1{    /// 
    /// 实现评分接口    /// 
    public class MarkService : IMark    {          public MarkService()        {         }        /// 
        /// 获取所有评分        /// 
        ///         /// 
             public List GetAllMarks(int athleteId)        {            List list = new List();            for (int i = 1; i < 11; i++) {                list.Add(new Mark()                {                    Id = i,                    JuryId = i,                    AthleteId = 1,                    Score = i,                                    });            }            return list.Where(x=>x.AthleteId ==athleteId).ToList();        }         /// 
        /// 获取除最小分数、最大分数之外的平均得分        /// 
        /// 
                public float GetAvgScoreExceptFirstAndLast()        {            List List_Marks = this.GetAllMarks(1);            return List_Marks.Where(                x => x.Id != this.GetMaxScore(List_Marks).Id &&                    x.Id != this.GetMinScore(List_Marks).Id).Average(y=>y.Score);         }        /// 
        /// 获取最大得分        /// 
        ///         /// 
                 public Mark GetMaxScore(List list_Marks)        {            float maxScore = list_Marks.Max(x => x.Score); return list_Marks.Where(x => x.Score == maxScore).FirstOrDefault(); } /// 
 /// 获取最小得分 /// 
 ///  /// 
            public Mark GetMinScore(List list_Marks) { float minScore = list_Marks.Min(x => x.Score); return list_Marks.Where(x => x.Score == minScore).FirstOrDefault(); } }}

 

class Program

using System;using System.Text; namespace ConsoleApp1{    class Program    {        static void Main(string[] args)        {            IMark t = new Test();            Console.WriteLine(t.GetAvgScoreExceptFirstAndLast());            Console.Read();        }    }}