我正在嘗試使用資料結構制作一個簡單的送餐系統。我在 ArrayList 中保存了鄰居名稱，在 GenericList 中保存了交付計數、食品名稱和它的計數。我畫了原理圖并附上了照片。
我撰寫了列印“Hood Name and it's delivery count”的程式，我的代碼和輸出在這里：
using System;
using System.Collections;
using System.Collections.Generic;
namespace temp
{
internal class delivery
{
public string food;
public int count;
}
internal class Hood
{
public string Name;
public int Number;
}
class programm
{
static void Main(string[] args)
{
string[] HoodName = { "Cherryhood", "NewCastle", "Greenlight", "Summerlin", "Westcity", "Paradise", "Legions", "Flamingos" };
int[] TeslimatSayisi = { 4, 2, 7, 2, 7, 3, 0, 1 };
ArrayList arrayList = new ArrayList();
int counter = 0;
List<Hood> genericList;
Hood ClassExample;
for (int i = 0; i < HoodName.Length;)
{
genericList = new List<Hood>();
int elementCount = (int)Math.Pow(2, counter);
for (int j = 0; j < elementCount; j )
{
ClassExample = new Hood();
ClassExample.Name = HoodName[i];
ClassExample.Number = TeslimatSayisi[i];
genericList.Add(ClassExample);
i ;
if (i == HoodName.Length) break;
}
arrayList.Add(genericList);
counter ;
}
int counter2 = 0;
foreach (List<Hood> temp in arrayList)
{
foreach (Hood temp2 in temp)
Console.WriteLine("Hood: " temp2.Name " | " " Delivery Count: " temp2.Number);
}
我的輸出是：
Hood: Cherryhood | Delivery Count: 4
Hood: NewCastle | Delivery Count: 2
Hood: Greenlight | Delivery Count: 7
Hood: Summerlin | Delivery Count: 2
Hood: Westcity | Delivery Count: 7
Hood: Paradise | Delivery Count: 3
Hood: Legions | Delivery Count: 0
Hood: Flamingos | Delivery Count: 1
我怎樣才能得到這樣的輸出：
Hood: Cherryhood | Delivery Count: 4 | Food's, count: Salat:2, Taco:5, Pizza:1, Burger:2
Hood: NewCastle | Delivery Count: 2 | Food's, count: Pasta:15, Cake,7
Hood: Greenlight | Delivery Count: 7 | Food's, count: ................
Hood: Summerlin | Delivery Count: 2 | ..........
Hood: Westcity | Delivery Count: 7 |...........
Hood: Paradise | Delivery Count: 3 |.................
Hood: Legions | Delivery Count: 0 |...........
Hood: Flamingos | Delivery Count: 1 |.....................
我猜我必須像這樣制作食物清單和計數清單：
foods = {pizza, taco, burger, salad, pasta, cake..........}
count = {1, 5, 2, 2, 15 ,7...........}
我需要創建交付類（包含膳食名稱、數量欄位）。然后我必須用相關鄰域中的交付物件數量填充 ArrayList 中的每個通用串列。我可以創建一個食物串列并從中隨機選擇食物資訊。對于這個專案，我們可以假設每次交付只能包含一種型別的膳食（包括多少）。
我對 C# 和資料結構很陌生，非常感謝您的幫助。
uj5u.com熱心網友回復：
我會使用Lists 個物件來定義您的資料結構。然后是LINQ來查詢、操作等。我認為它會更靈活，讓你更接近你想要的。像這樣的東西：
using System;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
{
var status = new List<Neighbourhood>{
new Neighbourhood{
Name = "Cherryhood",
Id = 1,
Orders = new List<Order>{
new Order{
Id = 300,
OrderItems = new List<string>{
"Salad",
"Taco",
"Pizza"
}
},
new Order{
Id = 301,
OrderItems = new List<string>{
"Cake",
"Taco",
"Pasta",
"Burger"
}
},
new Order{
Id = 302,
OrderItems = new List<string>{
"Salad",
"Pasta"
}
}
}
},
new Neighbourhood{
Name = "Newcastle",
Id = 2,
Orders = new List<Order>{
new Order{
Id = 400,
OrderItems = new List<string>{
"Salad",
"Taco",
"Pizza"
}
},
new Order{
Id = 401,
OrderItems = new List<string>{
"Cake",
"Taco",
"Pasta"
}
},
new Order{
Id = 402,
OrderItems = new List<string>{
"Salad",
"Pasta"
}
}
}
}
};
Console.WriteLine($"Neighbourhoods: {status.Count}");
foreach(var neighbourhood in status){
Console.WriteLine($"Neighbourhood: {neighbourhood.Name}");
Console.WriteLine($"Total Orders: {neighbourhood.Orders.Count}");
var allOrderItems = neighbourhood.Orders.SelectMany(i => i.OrderItems).ToList();
Console.WriteLine($"Total Ordered Items: {allOrderItems.Count}");
var groupedOrderItems = allOrderItems
.GroupBy(i=>i)
.Select(i => new {
Name = i.Key,
Total = i.Count()
})
.OrderBy(i => i.Name)
.ToList();
foreach(var groupedOrderItem in groupedOrderItems){
Console.WriteLine($"Order Item: {groupedOrderItem.Name} ({groupedOrderItem.Total})");
}
}
}
}
public class Neighbourhood{
public string Name {get;set;}
public int Id {get;set;}
public List<Order> Orders;
public Neighbourhood(){
Orders = new List<Order>();
}
}
public class Order{
public int Id {get;set;}
public List<string> OrderItems {get;set;}
public Order(){
OrderItems = new List<string>();
}
}
請參閱：https : //dotnetfiddle.net/kN103N
輸出：
Neighbourhoods: 2
Neighbourhood: Cherryhood
Total Orders: 3
Total Ordered Items: 9
Order Item: Burger (1)
Order Item: Cake (1)
Order Item: Pasta (2)
Order Item: Pizza (1)
Order Item: Salad (2)
Order Item: Taco (2)
Neighbourhood: Newcastle
Total Orders: 3
Total Ordered Items: 8
Order Item: Cake (1)
Order Item: Pasta (2)
Order Item: Pizza (1)
Order Item: Salad (2)
Order Item: Taco (2)
uj5u.com熱心網友回復：
我注意到的第一件事是引擎蓋課程沒有交付清單，所以我添加了一個。其次，我從主要方法中提取了方法及其職責。這就是結果：
public static void Main()
{
initDictionary();
printOutDeliveries();
}
static void printOutDeliveries()
{
foreach (var hood in hoods)
{
string foodNumbers="";
foreach (var del in hood.Value.Deliveries)
{
foodNumbers = del.food ": " del.count ", ";
}
Console.WriteLine("Hood: " hood.Key " | Deliver Count: " hood.Value.Number " Foods count: " foodNumbers);
}
}
static Dictionary<string, Hood> hoods = new Dictionary<string, Hood>();
static void initDictionary()
{
string[] HoodName = { "Cherryhood", "NewCastle", "Greenlight", "Summerlin", "Westcity", "Paradise", "Legions", "Flamingos" };
int[] TeslimatSayisi = { 4, 2, 7, 2, 7, 3, 0, 1 };
int i = 0;
foreach (var name in HoodName)
{
hoods.Add(name, new Hood()
{
Name = name,
Number = TeslimatSayisi[i ],
Deliveries = GetRandomDeliveries()
});
}
}
static List<delivery> GetRandomDeliveries()
{
List<string> foods = new List<string> { "Salat", "Taco", "Pizza", "Burger", "Pasta", "Cake" };
List<delivery> deliveries = new List<delivery>();
var randMaxVal = foods.Count - 1;
var random = new Random();
var forlooplength = random.Next(randMaxVal);
for (int i = 0; i < forlooplength; i )
{
var rand = random.Next(randMaxVal);
deliveries.Add(new delivery()
{
food = foods[rand]
});
foods.RemoveAt(rand);
}
return deliveries;
}
internal class delivery
{
public string food;
public int count => new Random().Next(10);
}
internal class Hood
{
public string Name;
public int Number;
public List<delivery> Deliveries;
}
uj5u.com熱心網友回復：
我對我的代碼進行了一些更改，部分解決了它。這是我的代碼：
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
namespace temp
{
internal class delivery
{
public string food;
public int count;
}
internal class Hood
{
public List<delivery> deliveryList;
public string Name;
public int Number;
}
class program
{
static void Main(string[] args)
{
List<string> food_names = new List<string> { "Burger", "Pizza", "Toast", "Chicken", "Taco", "Ice Cream", "Tomato", "Potato", "Salad" };
List<int> max_food = new List<int> { 4, 5, 10, 7, 2, 6, 3, 7, 9 };
ArrayList HoodName = new ArrayList(){
"Cherryhood", "NewCastle", "Greenlight", "Summerlin", "Westcity", "Paradise", "Legions", "Flamingos"
};
ArrayList TeslimatSayisi = new ArrayList() { 4, 2, 7, 2, 7, 3, 0, 1 };
List<Hood> genericList = new List<Hood>();
Hood ClassExample;
for (int i = 0; i < HoodName.Count; i )
{
ClassExample = new Hood();
ClassExample.deliveryList = new List<delivery>();
ClassExample.Name = (string)HoodName[i];
ClassExample.Number = (int)TeslimatSayisi[i];
genericList.Add(ClassExample);
}
foreach (Hood element in genericList)
{
delivery delivery_example;
for (int i = 0; i < element.Number; i )
{
delivery_example = new delivery();
delivery_example.food = "Burger";
delivery_example.count = 5;
element.deliveryList.Add(delivery_example);
}
}
foreach (Hood temp in genericList)
{
List<string> copy1 = food_names.ToList();
List<int> copy2 = max_food.ToList();
string temp1 = "Foods, count: ";
Random rnd = new Random();
foreach (delivery d in temp.deliveryList)
{
if (copy1.Count != 0)
{
int r = rnd.Next(copy1.Count);
string food = copy1[r];
string num = copy2[r].ToString();
copy1.Remove(food);
copy2.Remove(int.Parse(num));
temp1 = food;
temp1 = ":";
temp1 = num;
temp1 = ", ";
}
else
{
temp1 = "Ran out of food, ";
}
}
Console.WriteLine("Hood: " temp.Name " | " " Delivery Count: " temp.Number " | " temp1);
}
}
}
}
輸出：
Hood: Cherryhood | Delivery Count: 4 | Foods, count: Ice Cream:6, Potato:7, Chicken:2, Salad:9,
Hood: NewCastle | Delivery Count: 2 | Foods, count: Ice Cream:6, Burger:4,
Hood: Greenlight | Delivery Count: 7 | Foods, count: Burger:4, Taco:2, Salad:9, Tomato:3, Pizza:5, Chicken:7, Ice Cream:6,
Hood: Summerlin | Delivery Count: 2 | Foods, count: Salad:9, Potato:7,
Hood: Westcity | Delivery Count: 7 | Foods, count: Burger:4, Ice Cream:6, Taco:2, Tomato:3, Toast:10, Pizza:5, Chicken:7,
Hood: Paradise | Delivery Count: 3 | Foods, count: Ice Cream:6, Salad:9, Toast:10,
Hood: Legions | Delivery Count: 0 | Foods, count:
Hood: Flamingos | Delivery Count: 1 | Foods, count: Potato:7,
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