C＃比较两个列表并返回值

Question

我遇到问题。我尝试比较两个列表currentItemsInColl和bPList。里面bPList我有其他名单RequiredItems现在是我所需要的。 我想比较currentItemsInColl和RequiredItems并返回bPList.craftingBlueprint。 我尝试比较，但我不知道如何使用它：/

using Devdog.InventoryPro; 
using System; 
using System.Collections; 
using System.Collections.Generic; 
using UnityEngine; 


public class CraftingAutoUpdate : MonoBehaviour { 

    public ItemCollectionBase itemCollection; 
    public ItemCollectionBase rewardCollection; 
    public CraftingCategory craftingCategory; 

    [Header("Blue Print List")] 

    public List<BlueprintList> bPList = new List<BlueprintList>(); 
    public List<CurrentItemInCollList> currentItemsInColl = new List<CurrentItemInCollList>(); 

    private CraftingBlueprint readyBlueprint; 

    public void OnShow() 
    { 
     GetBluePrint(); 
     InvokeRepeating("StartUpdate",0f,0.05f); 
    } 

    public void OnHide() 
    { 
     CancelInvoke("StartUpdate"); 
    } 

    private void StartUpdate() 
    { 

     UpdateDirectory(); 
     UpdateFindMatchItems(); 
     UpdateCraftResults(); 
    } 


    private void GetBluePrint() 
    { 
     bPList.Clear(); 
     foreach (var b in craftingCategory.blueprints) 
     { 
      if (b != null) 
      { 
       var rI = b.requiredItems; 

       var listReqItems = new List<RequiredItem>(); 
       foreach (var e in rI) 
       { 
        listReqItems.Add(new RequiredItem(e.item.ID, e.amount)); 
       } 

       bPList.Add(new BlueprintList(b.name, b, listReqItems)); 
      } 
     } 
    } 

    private void UpdateDirectory() 
    { 
     currentItemsInColl.Clear(); 

     foreach(var item in itemCollection) 
     { 
      if (item.item != null) 
      { 
       var cT = item.item.ID; 
       if (currentItemsInColl.Find(u =>u.itemID == cT) == null) 
       { 
        var itemCount = itemCollection.GetItemCount(item.item.ID); 
        currentItemsInColl.Add(new CurrentItemInCollList(item.item.ID, itemCount)); 
       } 
      } 
     } 
    } 

在这种梅索德我尝试在集合找到相同的项目：

private void UpdateFindMatchItems() 
    { 
     readyBlueprint = null; 
     bool matchFailed = false; 
     int requiredItemCount = 0; 
     int currentItemsInCollCount = currentItemsInColl.Count; 

     foreach(var bp in bPList) 
     { 

      requiredItemCount = bp.RequiredItems.Count; 
      foreach(var rI in bp.RequiredItems) 
      { 

       if(CompareLists(currentItemsInColl, bp.RequiredItems)) 
       { 
        print("aa"); 
       } 

      print(currentItemsInCollCount); 
     } 
    } 

    private void UpdateCraftResults() 
    { 
     rewardCollection.Clear(); 
     if (readyBlueprint != null) 
     { 
      foreach (var items in readyBlueprint.resultItems) 
      { 
       rewardCollection.AddItem(items.item,null,true,false); 
      } 
     } 
    } 

我尝试财产以后这样的，但是这个名单不会工作：

public static bool CompareLists<T>(List<T> aListA, List<T> aListB) 
    { 
     if (aListA == null || aListB == null || aListA.Count != aListB.Count) 
      return false; 
     if (aListA.Count == 0) 
      return true; 
     Dictionary<T,T> lookUp = new Dictionary<T,T>(); 
     // create index for the first list 
     for (int i = 0; i < aListA.Count; i++) 
     { 
      uint count = 0; 
      if (!lookUp.TryGetValue(aListA[i], out count)) 
      { 
       lookUp.Add(aListA[i], 1); 
       continue; 
      } 
      lookUp[aListA[i]] = count + 1; 
     } 
     for (int i = 0; i < aListB.Count; i++) 
     { 
      uint count = 0; 
      if (!lookUp.TryGetValue(aListB[i], out count)) 
      { 
       // early exit as the current value in B doesn't exist in the lookUp (and not in ListA) 
       return false; 
      } 
      count--; 
      if (count <= 0) 
       lookUp.Remove(aListB[i]); 
      else 
       lookUp[aListB[i]] = count; 
     } 
     // if there are remaining elements in the lookUp, that means ListA contains elements that do not exist in ListB 
     return lookUp.Count == 0; 
    } 
} 

这是我的清单：

/*  LISTS  */ 


[Serializable] 
public class CurrentItemInCollList 
{ 
    public uint itemID; 
    public uint itemAmount; 

    public CurrentItemInCollList(uint newitemID, uint newItemAmount) 
    { 
     itemID = newitemID; 
     itemAmount = newItemAmount; 
    } 
} 

[Serializable] 
public class BlueprintList 
{ 
    public string bluePrintName; 
    public CraftingBlueprint craftingBlueprint; 
    public List<RequiredItem> RequiredItems = new List<RequiredItem>(); 

    public BlueprintList(string newBluePrintName, CraftingBlueprint newcraftingBlueprint, List<RequiredItem> list) 
    { 
     bluePrintName = newBluePrintName; 
     craftingBlueprint = newcraftingBlueprint; 
     RequiredItems = list; 

    } 
} 
[Serializable] 
public class RequiredItem 
{ 
    public uint itemID; 
    public uint itemAmount; 

    public RequiredItem(uint newitemID, uint newItemAmount) 
    { 
     itemID = newitemID; 
     itemAmount = newItemAmount; 
    } 
} 

我忘了.. CurrentItemInCollList.itemAmount可以> = RequiredItems.itemAmount

Answer 1

字典使用散列值来比较对象。 存储的类必须实现public override int GetHashCode(){}

Answer 2

使用LINQ - 这里是一个小控制台例如：

class Program 
{ 
    static void Main(string[] args) 
    { 
     //Required list 
     List<Order> currentItemsInColl = new List<Order>(); 
     currentItemsInColl.Add(new Order() { Name = "bike1", Id = "01" }); 
     currentItemsInColl.Add(new Order() { Name = "bike4", Id = "04" }); 

     //List of all items 
     List<BPP> bPList = new List<BPP>(); 
     bPList.Add(new BPP() { BikeName = "bike1", Idzzz = "01" }); 
     bPList.Add(new BPP() { BikeName = "bike2", Idzzz = "02" }); 
     bPList.Add(new BPP() { BikeName = "bike3", Idzzz = "03" }); 
     bPList.Add(new BPP() { BikeName = "bike4", Idzzz = "04" }); 
     bPList.Add(new BPP() { BikeName = "bike5", Idzzz = "05" }); 

     //Blueprint List 
     List<BPP> Blueprint = new List<BPP>(); 

     //get all items into the Blueprint list 
     foreach (Order i in currentItemsInColl) 
     { 
      List<BPP> tmp = bPList.FindAll(x => x.Idzzz.Contains(i.Id)); 
      //here you add them all to a list 
      foreach (BPP item in tmp) 
      { 
       Blueprint.Add(item); 
      } 
     } 

     Console.ReadLine(); 
    } 

} 
public class Order 
{ 
    public string Id { get; set; } 
    public string Name { get; set; } 
} 

public class BPP 
{ 
    public string Idzzz { get; set; } 
    public string BikeName { get; set; } 
} 

旁注：我感到比较ID在每个表的！希望能帮助到你。