我正在尝试设置我的Sort和Find。能够按名称和价格排序，与find.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace sodacrate
{
class Bottles //skapar klassen Soda för att samla information om innehållet i backens SMAK, PRIS och av vilken TYP drickan är (vatten eller läsk) s.134->
{
string flavor; //{ "Cola", "Water", "Orange", "Raspberry", "GrapeTonic" }
int price; // 4, 5, 6, 7, 8
//METOD: CONSTRUCTOR
public Bottles(string flavor, int price)
{
this.flavor = flavor;
this.price = price;
}
//Egenskap för flavor
public string Flavor
{
get { return flavor; }
set { flavor = value; }
}
//Egenskap för price
public int Price
{
get { return price; }
set { price = value; }
}
public override string ToString()
{
return string.Format(Flavor + " " + Price);
//return string.Format("The bottle {0} costs {2} G.", flavor, price);
}
}
class Sodacrate
{
Bottles[] myCrate = new Bottles[25]; //create empty array that holds 25
string[] flavors = new string[25]; //create empty list of current flavors in crate
int[] prices = new int[25]; //create empty list of current prices in crate
//List<string> flavors = new List<string>(); //create empty list of current flavors in crate
//List<int> prices = new List<int>();
private int amountBottles = 0; //Identifierare. Håller reda på antal flaskor
public int crateValue = 0; //Sammanlagda värdet på alla flaskor som finns i backen
public void Run()
{
int temp = 0;
do
{
Console.Clear();
Console.WriteLine("nnnn");
Console.WriteLine("*********************************************");
Console.WriteLine("** Welcome to your Sodacrate! **");
Console.WriteLine("*********************************************");
Console.WriteLine("* *");
Console.WriteLine("* These are your options: *");
Console.WriteLine("* *");
Console.WriteLine("* 1. Add soda to your crate *");
Console.WriteLine("* 2. Print the content *");
Console.WriteLine("* 3. Calculate the content *");
Console.WriteLine("* 4. Sort sodas *");
Console.WriteLine("* 5. Find sodas *");
Console.WriteLine("* 6. Remove bottles *");
Console.WriteLine("* 0. Quit *");
Console.WriteLine("* *");
Console.WriteLine("* *");
Console.WriteLine("*********************************************");
Console.WriteLine("nnnn");
temp = int.Parse(Console.ReadLine());
switch (temp)
{
case 1:
add_soda();
break;
case 2:
print_crate();
break;
case 3:
calc_total();
break;
case 4:
sort_sodas();
break;
case 5:
find_soda();
break;
case 6:
remove_soda();
break;
case 0:
Console.WriteLine("Shutting down program"); //avsluta programmet.
break;
default:
Console.WriteLine("Incorrect Input"); //skrivs ut om annat än en siffra mellan 0-6 anges.
break;
}
} while (temp != 0);
}
public void add_soda()
{
int adding = 0;
do
{
//Console.Clear(); //tar bort all föregående text i konsolfönstret
//menyn för att välja smak
Console.WriteLine("nnn");
Console.WriteLine("*****************************************************");
Console.WriteLine("** Which flavor do you like? **");
Console.WriteLine("*****************************************************");
Console.WriteLine("* *");
Console.WriteLine("* Choose by selecting 1-5 and ENTER or 0 to go back *");
Console.WriteLine("* *");
Console.WriteLine("* 1. COLA. Costs 4 G *");
Console.WriteLine("* 2. WATER. Costs 5 G *");
Console.WriteLine("* 3. ORANGE. Costs 6 G *");
Console.WriteLine("* 4. RASPBERRY Costs 7 G *");
Console.WriteLine("* 5. GRAPE TONIC Costs 8 G *");
Console.WriteLine("* 0. Return to Main Menu *");
Console.WriteLine("* *");
Console.WriteLine("*****************************************************");
Console.WriteLine("nnnn");
adding = int.Parse(Console.ReadLine());
//själva valen, input 0-5 och sen ENTER för att verkställa
if (amountBottles >= 25)
{
Console.WriteLine(" - Your crate is full!");
Console.WriteLine(amountBottles);
}
else
{
switch (adding)
{
case 1:
Bottles Cola = new Bottles("Cola", 4);
myCrate[amountBottles] = Cola;
Console.WriteLine("Cola");
break;
case 2:
Bottles Water = new Bottles("Water", 5);
myCrate[amountBottles] = Water;
Console.WriteLine("Water");
break;
case 3:
Bottles Orange = new Bottles("Orange", 6);
myCrate[amountBottles] = Orange;
Console.WriteLine("Orange");
break;
case 4:
Bottles Raspberry = new Bottles("Raspberry", 7);
myCrate[amountBottles] = Raspberry;
Console.WriteLine("Raspberry");
break;
case 5:
Bottles GrapeTonic = new Bottles("GrapeTonic", 8);
myCrate[amountBottles] = GrapeTonic;
Console.WriteLine("Grape Tonic");
break;
default:
Console.WriteLine("Incorrect Input");
break;
}
amountBottles++;
}
}while (adding != 0);
}
public void print_crate()
{
int keepshopping1 = 0;
do
{
amountBottles--; //removes the extra unidentified bottle that always ends up in the crate when calling upon add_soda
Console.Clear();
Console.WriteLine("*******************************************************");
Console.WriteLine("** Contents of your Soda Crate **");
Console.WriteLine("*******************************************************");
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Purchase more bottles?n" + "[1] to Purchase, [2] to Remove bottles or [0] to go back to Main Menu. ");
Console.WriteLine("nn");
Console.WriteLine("Amount of bottles in your crate: " + amountBottles );
int i = 0; //counting variable
while (myCrate[i] != null) //counts while no element in myCrate is null
{
string temp = myCrate[i].Flavor; // gets the "name" property of the object
flavors[i] = temp;
//flavors.Add(temp); //adds the name property to the list "flavors" -LIST-funktionen
i++;
}
var a = from x in flavors //orders and counts duplicates in list
group x by x into g
let count = g.Count()
orderby count descending
select new { Value = g.Key, Count = count };
foreach (var x in a)
Console.WriteLine(x.Value + " " + x.Count + " bottles"); //prints sorted, grouped list
keepshopping1 = int.Parse(Console.ReadLine());
switch (keepshopping1)
{
case 1:
add_soda();
break;
case 2:
remove_soda();
break;
case 0: //tillbaka till huvudmenyn
break;
default:
Console.WriteLine("Incorrect Input"); //skrivs ut om annat än en siffra 1,2 eller 0 anges.
break;
}
} while (keepshopping1 != 0);
}
public void calc_total()
{
int sum = 0;
int keepshopping2 = 0;
do
{
Console.Clear();
Console.WriteLine("*******************************************************");
Console.WriteLine("** Cost of your Soda Crate **");
Console.WriteLine("*******************************************************");
Console.WriteLine();
int i = 0; //counting variable
crateValue = sum;
while (myCrate[i] != null) //counts while no element in myCrate is null
{
sum = sum + myCrate[i].Price;
i++;
}
Console.WriteLine("This will be " + sum + " G's, sir.");
Console.WriteLine("nn");
Console.WriteLine("Continue shopping?n" + "[1] to Continue, [2] to Remove soda or [0] to go back to Main Menu. ");
Console.WriteLine("nn");
keepshopping2 = int.Parse(Console.ReadLine());
switch (keepshopping2)
{
case 1:
add_soda();
break;
case 2:
remove_soda();
break;
case 0: //tillbaka till huvudmenyn
break;
default:
Console.WriteLine("Incorrect Input"); //skrivs ut om annat än siffra 1,2 eller 0 anges.
break;
}
} while (keepshopping2 != 0);
//Tänk på att inte räkna med tomma positioner i vektorn
}
public void find_soda()
{
}
public void sort_sodas()
{
int max = myCrate.Length - 1;
//outer loop: Goes through the entire list until everything's sorted
for (int m = 0; m < max; m++)
{
//inner loop: Goes through every element and comparing them to eachother. Doesn't go through what's already sorted.
int sorted = max - m; //to see how many has been gone through
for (int n = 0; n < sorted; n++)
{
if (myCrate[n] > myCrate[n+1]) //comparing elements ERROR cs0019
{
//switch place
int temp3 = myCrate[n];
myCrate[n] = myCrate[n+1];
myCrate[n+1] = temp3;
}
}
}
//write the list
for (int m = 0; m < myCrate.Length; m++)
Console.WriteLine(myCrate[m]);
}
public void remove_soda()
{
if (myCrate == null)
{
Console.WriteLine("Your crate is empty. ");
Console.ReadKey();
return;
}
Console.WriteLine("Name on the bottle: ");
string name = Console.ReadLine();
if (myCrate.Select(x => x.Flavor).Contains(flavors)) //errorcs1929
{
var itemToRemove = myCrate.Where(x => x.Flavor.Equals(flavors)).First();
if (itemToRemove != null)
myCrate.Remove(itemToRemove); //error 1061 - 'Bottles[]' cannot contain a definition for 'Remove'
}
else
{
Console.WriteLine("Name not found. ");
Console.ReadKey();
}
}
}
class Program
{
public static void Main(string[] args)
{
//Skapar ett objekt av klassen Sodacrate som heter Sodacrate
var Sodacrate = new Sodacrate();
Sodacrate.Run();
Console.Write("Press any key to continue . . . ");
Console.ReadKey(true);
}
}
}
编辑
我已经尝试过这个方法remove_soda，但我不能得到我的头周围我错了
if (myCrate == null)
{
Console.WriteLine("Your crate is empty. ");
Console.ReadKey();
return;
}
Console.WriteLine("Name on the bottle: ");
string name = Console.ReadLine();
if (myCrate.Select(x => x.Flavor).Contains(flavors))
{
var itemToRemove = myCrate.Where(x => x.Flavor.Equals(flavors)).First();
if (itemToRemove != null)
myCrate.Remove(itemToRemove);
}
else
{
Console.WriteLine("Name not found. ");
Console.ReadKey();
}
这是我在sort_soda
中完成的气泡排序public void sort_sodas()
{
int max = myCrate.Length - 1;
//outer loop: Goes through the entire list until everything's sorted
for (int m = 0; m < max; m++)
{
//inner loop: Goes through every element and comparing them to eachother. Doesn't go through what's already sorted.
int sorted = max - m; //to see how many has been gone through
for (int n = 0; n < sorted; n++)
{
if (myCrate[n] > myCrate[n+1]) //comparing elements
{
//switch place
int temp3 = myCrate[n];
myCrate[n] = myCrate[n+1];
myCrate[n+1] = temp3;
}
}
}
//write the list
for (int m = 0; m < myCrate.Length; m++)
Console.WriteLine(myCrate[m]);
}
然而，它给了我3个错误。
1:操作符'>'不能用于'Bottles'和'Bottles'类型的操作数
2:不能隐式转换类型'sodacrate '。
3:不能隐式地将类型'int'转换为'sodacrate '。瓶"
for (int i = 0; i < 25; i++)的读取为当i从0开始时，当i小于25时，每次循环将i增加1
所以如果我<25 .它永远不会== 25
数组是为固定不变的数据而设计的，我建议使用List
List<Bottles> Crate = new List<bottles>();
那么你可以做
if (Crate.Count >= 25)
{
Console.WriteLine(" - Your crate is full!");
}
else
{
Crate.Add(bottle);
}
break表示立即退出循环并停止执行，因此当i=0时按break, for循环停止工作
continue表示立即退出循环，然后从开始
来分组你的结果那么Linq是你的朋友
crate.Groupby(b=>b.Flavor).Select(g=>g.Count() + " " + g.Key);
将返回一个可枚举的字符串
同样，你可以使用Linq的Orderby()对
进行排序。crate.Orderby(b=>b.Price)
也可以使用Linq的Where()来搜索
crate.Where(b=>b.Flavour == SearchField)
编辑:更明确一点，你的Add函数应该像这样
adding = int.Parse(Console.ReadLine());
if (amountBottles >= 25)
{
Console.WriteLine(" - Your crate is full!");
}
else
{
//Your Switch statement here
amountBottles++;
}
和你的打印应该是
for (int i = 0; i < myCrate.Length; i++)
{
if (myCrate[i] != null)
{
Console.WriteLine( myCrate[i].Flavor );
}
else
{
Console.WriteLine("Empty Space");
}
}
编辑:当你想用LINQ进行分组和排序时然后，对于分组，您需要创建一个group类，该类将保存您的瓶子类型和计数，同时生成总数，然后使用该组进行打印
的排序那么你会想要实现一个排序算法，最好的是快速排序虽然插入排序更简单