price的排序

[echoxue]

List<price> listPrice = new List<price>()
privce pType
4 A
5 A
6 A
100 B
120 B
200 B
150 C
300 C
90 C

要求type为A的为price的降序，type B和C的price为升序
privce pType
6 A
5 A
4 A
90 C
100 B
120 B
150 C
200 B
300 C

[q107770540]

void Main()
{
	List<Price> listPrice = new List<Price>
	{
	  new Price { price=4, pType="A" },
	  new Price { price=5, pType="A" },
	  new Price { price=6, pType="A" },
	  new Price { price=100, pType="B" },
	  new Price { price=120, pType="B" },
	  new Price { price=200, pType="B" },
	  new Price { price=150, pType="C" },
	  new Price { price=300, pType="C" },
	  new Price { price=90, pType="C" }
	};
	var list1=listPrice.Where(l=>l.pType=="A").OrderByDescending(l=>l.price);
	var list2=listPrice.Except(list1).OrderBy(l=>l.price);
	
	 var result=list1.Concat(list2);
	
}

class Price
{
  public int price{get;set;}
  public string pType{get;set;}
}

[whrspsoft3723]

对比接口不是自己定义 的吗？
在对比的接口中实现。

无非iCompare(object x,object y){
  (y.ptye = b x.pType ==b {
     return x.priect - y.price
  }

  (y.ptye = a x.pType == a {
     return (x.priect - y.price) * (-1)
  }
  else{
   类型 不同时的处理
  }


}


  }

[ktei2008]

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Globalization;

namespace Geek
{
    public class Price
    {
        public Price(string type, double amount)
        {
            Type = type;
            Amount = amount;
        }

        public string Type { get; private set; }
        public double Amount { get; private set; }

        public override string ToString()
        {
            return string.Format("{0} {1}", Type, Amount);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            List<Price> prices = new List<Price>()
            {
                new Price("A", 4),
                new Price("A", 5),
                new Price("A", 6),
                new Price("B", 100),
                new Price("B", 120),
                new Price("B", 200),
                new Price("C", 150),
                new Price("C", 300),
                new Price("C", 90)
            };

            List<Price> sortedPrices = prices.Where(p => p.Type ==  "A").OrderByDescending(p => p.Amount).Union(
                prices.Where(p => p.Type != "A").OrderBy(p => p.Amount)).ToList();

            Console.WriteLine("Input:");
            prices.ForEach(p => Console.WriteLine(p));
            Console.WriteLine();

            Console.WriteLine("Output:");
            sortedPrices.ForEach(p => Console.WriteLine(p));
            Console.ReadKey();
        }
    }
}

I roughly wrote a sample. Hope this helps.