Question

c#用ArrayList统计有多少个及格分数 并降序输出？

Answer 1

using System;

using System.Collections;

class Program

{

public static void Main(string[] args)

{

ArrayList al=new ArrayList();

int score,pass=0,nopass=0;

string s;

Console.WriteLine("请输入分数，每行一个，负数结束：");

while(true)

{

s=Console.ReadLine().Trim();

score=Convert.ToInt32(s);

if(score<0)

break;

if(score>=60)

pass++;

else

nopass++;

al.Add(score);

}

al.Sort();

al.Reverse();

Console.WriteLine("及格：{0}，不及格：{1}",pass,nopass);

Console.WriteLine("按降序排序后的分数：");

for(int i=0;i<al.Count-1;i++)

Console.Write("{0},",al[i]);

Console.WriteLine("{0}",al[al.Count-1]);

Console.WriteLine("按任意键继续。。。");

Console.ReadKey(true);

}

}