关于结构体的汽车问题练习题

            //定义一个结构体，存放关于车辆的几个信息
            //将所有车的信息都放入集合中
            //车型号               价格（W）    轴距 （mm）         油耗（L/100km）
            //宝马320Li           38              2920                        6.9
            //宝马520Li           43              3108                        7.2
            //宝马730Li            89              3210                       6.3
            //奥迪A4L35TFSI   31              2869                        6.2 
            //奥迪A6L30TFSI   43              3012                        7.6
            //奥迪A8L45TFSI   89              3122                        8.1
            //奔驰C200L           35              2920                        6.1
            //奔驰E260L           48              3014                        6.7
            //奔驰S320L           93              3165                        8

            //所有在售车辆中最便宜的

            //求宝马中最便宜的车型是什么，所有信息列出

            //选个轴距最长的

            //选个轴距最长的，必须是奔驰

            //想要一辆油耗最低的车

            //想要一辆油耗最低的奥迪车

            //我只有50万，看看能买什么车

            //我只需要60万以上的车，列出来所有车型和所有信息

            //轴距必须超过3m，列列表

            //油耗在8.5以下都行，列列表

            //我不在乎油耗，要油耗最高的车


            ArrayList al = new ArrayList();
            qiche qc = new qiche();
            qc.xinghao = "宝马320Li";
            qc.price = 38;
            qc.zhouju = 2920;
            qc.youhao = 6.9;
            al.Add(qc);
            qc.xinghao = "宝马520Li";
            qc.price = 43;
            qc.zhouju = 3108;
            qc.youhao = 7.2;
            al.Add(qc);
            qc.xinghao = "宝马730Li";
            qc.price = 89;
            qc.zhouju = 3210;
            qc.youhao = 6.3;
            al.Add(qc);
            qc.xinghao = "奥迪A4L35TFSI";
            qc.price = 31;
            qc.zhouju = 2869;
            qc.youhao = 6.2;
            al.Add(qc);
            qc.xinghao = "奥迪A6L30TFSI";
            qc.price = 43;
            qc.zhouju = 3012;
            qc.youhao = 7.6;
            al.Add(qc);
            qc.xinghao = "奥迪A8L45TFSI";
            qc.price = 89;
            qc.zhouju = 3122;
            qc.youhao = 8.1;
            al.Add(qc);
            qc.xinghao = "奔驰C200L";
            qc.price = 35;
            qc.zhouju = 2920;
            qc.youhao = 6.1;
            al.Add(qc);
            qc.xinghao = "奔驰E260L";
            qc.price = 48;
            qc.zhouju = 3014;
            qc.youhao = 6.7;
            al.Add(qc);
            qc.xinghao = "奔驰S320L";
            qc.price = 93;
            qc.zhouju = 3165;
            qc.youhao = 8;
            al.Add(qc);
            //所有在售车辆中最便宜的
            for (int i = 0; i < 8; i++)
            {
                for (int j = i + 1; j < 9; j++)
                {
                    if (((qiche)al[i]).price > ((qiche)al[j]).price)
                    {
                        object zhong = al[i];
                        al[i] = al[j];
                        al[j] = zhong;
                    }
                }
            }
            qiche qc1 = (qiche)al[0];
            Console.WriteLine("所有在售车辆中最便宜的：" + "
" + "{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc1.xinghao, qc1.price, qc1.zhouju, qc1.youhao);
            Console.WriteLine();
            //求宝马中最便宜的车型是什么，所有信息列出  
            for (int i = 0; i < 9; i++)
            {
                if (((qiche)al[i]).xinghao.Contains("宝马"))
                {
                    qiche qc2 = (qiche)al[i];
                    Console.WriteLine("宝马车中最便宜的车辆信息：" + "
" + "{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc2.xinghao, qc2.price, qc2.zhouju, qc2.youhao);
                    break;
                }
            }
            Console.WriteLine();
            //选个轴距最长的
            for (int i = 0; i < 8; i++)
            {
                for (int j = i + 1; j < 9; j++)
                {
                    if (((qiche)al[i]).zhouju < ((qiche)al[j]).zhouju)
                    {
                        object zhong = al[i];
                        al[i] = al[j];
                        al[j] = zhong;
                    }
                }
            }
            qiche qc3 = (qiche)al[0];
            Console.WriteLine("轴距最长的车辆信息：" + "
" + "{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc3.xinghao, qc3.price, qc3.zhouju, qc3.youhao);
            Console.WriteLine();
            //选个轴距最长的，必须是奔驰
            for (int i = 0; i < 9; i++)
            {
                if (((qiche)al[i]).xinghao.Contains("奔驰"))
                {
                    qiche qc2 = (qiche)al[i];
                    Console.WriteLine("奔驰车中轴距最长的车辆信息：" + "
" + "{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc2.xinghao, qc2.price, qc2.zhouju, qc2.youhao);
                    break;
                }
            }
            Console.WriteLine();
            //想要一辆油耗最低的车
            for (int i = 0; i < 8; i++)
            {
                for (int j = i + 1; j < 9; j++)
                {
                    if (((qiche)al[i]).youhao > ((qiche)al[j]).youhao)
                    {
                        object zhong = al[i];
                        al[i] = al[j];
                        al[j] = zhong;
                    }
                }
            }
            qiche qc5 = (qiche)al[0];
            Console.WriteLine("轴距最长的车辆信息：" + "
" + "{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc5.xinghao, qc5.price, qc5.zhouju, qc5.youhao);
            Console.WriteLine();
            //想要一辆油耗最低的奥迪车
            for (int i = 0; i < 8; i++)
            {
                for (int j = i + 1; j < 9; j++)
                {
                    if (((qiche)al[j]).xinghao.Contains("奥迪"))
                    {
                        object zhong = al[i];
                        al[i] = al[j];
                        al[j] = zhong;
                    }
                }
            }
            for (int i = 0; i < 8; i++)
            {
                for (int j = i + 1; j < 9; j++)
                {
                    if (((qiche)al[i]).youhao > ((qiche)al[j]).youhao && ((qiche)al[i]).xinghao.Contains("奥迪") && ((qiche)al[j]).xinghao.Contains("奥迪"))
                    {
                        object zhong = al[i];
                        al[i] = al[j];
                        al[j] = zhong;
                    }
                }
            }
            qiche qc6 = (qiche)al[0];
            Console.WriteLine("奥迪车中油耗最低的车辆信息：" + "
" + "{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc6.xinghao, qc6.price, qc6.zhouju, qc6.youhao);
            Console.WriteLine();
            //我只有50万，看看能买什么车
            Console.WriteLine("只有50万，所有能买的车为：");
            for (int i = 0; i < 9; i++)
            {
                if (((qiche)al[i]).price <= 50)
                {
                    qiche qc7 = (qiche)al[i];
                    Console.WriteLine("{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc7.xinghao, qc7.price, qc7.zhouju, qc7.youhao);
                }
            }
            Console.WriteLine();
            //我只需要60万以上的车，列出来所有车型和所有信息
            Console.WriteLine("所有60万以上的车辆信息：");
            for (int i = 0; i < 9; i++)
            {
                if (((qiche)al[i]).price > 60)
                {
                    qiche qc7 = (qiche)al[i];
                    Console.WriteLine("{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc7.xinghao, qc7.price, qc7.zhouju, qc7.youhao);
                }
            }
            Console.WriteLine();
            //轴距必须超过3m，列列表
            Console.WriteLine("轴距超过3m的车辆信息：");
            for (int i = 0; i < 9; i++)
            {
                if (((qiche)al[i]).zhouju > 3000)
                {
                    qiche qc8 = (qiche)al[i];
                    Console.WriteLine("{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc8.xinghao, qc8.price, qc8.zhouju, qc8.youhao);
                }
            }
            Console.WriteLine();
            //油耗在8.5以下都行，列列表
            Console.WriteLine("油耗8.5以下的车辆信息：");
            for (int i = 0; i < 9; i++)
            {
                if (((qiche)al[i]).youhao < 8.5)
                {
                    qiche qc9 = (qiche)al[i];
                    Console.WriteLine("{0}" + "	" + "价格：{1}万元" + "	" + "轴距{2}mm" + "	" + "油耗{3}L/100km。", qc9.xinghao, qc9.price, qc9.zhouju, qc9.youhao);
                }
            }
            Console.WriteLine();
            //我不在乎油耗，要油耗最高的车
            for (int i = 0; i < 8; i++)
            {
                for (int j = i + 1; j < 9; j++)
                {
                    if (((qiche)al[i]).youhao < ((qiche)al[j]).youhao)
                    {
                        object zhong = al[i];
                        al[i] = al[j];
                        al[j] = zhong;
                    }
                }
            }
            qiche qc10 = (qiche)al[0];
            Console.WriteLine("油耗最高的车辆信息：{0}，价格：{1}万元，轴距{2}mm，油耗{3}L/100km。", qc10.xinghao, qc10.price, qc10.zhouju, qc10.youhao);