compare two lists regardless of order Unity c#-CodePudding

I would like to compare two lists. If both lists have the same number of elements, the same elements, but in a different order. They should be true, is there a way to achieve this?

    bool CheckMatch()
    { 
            if (prueba1 == null && prueba2 == null)
            {
                return true;
            }
            else if (prueba1 == null || prueba2 == null)
            {
                return false;
            }

        if (prueba1.Count != prueba2.Count)
        {

            return false;
        }
        for (int i = 0; i < prueba1.Count; i  )
        {
            for (int j = 0; j < prueba2.Count; j  )
            {
                if (prueba1[i] != prueba2[j])
                    return false;
            }
        }
        return true;        
    }

CodePudding user response：

Sort first and comprare elements

using System.Collections.Generic;
using System.Linq;
using UnityEngine;

public class ABCD : MonoBehaviour
{
    public void Test()
    {
        List<int> A = new List<int>() { 1, 3, 5 };
        List<int> B = new List<int>() { 5, 3, 1 };
    }

    bool IsSame(List<int> A, List<int> B)
    {
        if (A.Count != B.Count)
        {
            return false;
        }

        List<int> ASort = A.ToList();
        ASort.Sort();
        List<int> BSort = B.ToList();
        BSort.Sort();

        for (int i = 0; i < ASort.Count; i  )
        {
            if(ASort[i] != BSort[i])
            {
                return false;
            }
        }

        return true;
    }
}

CodePudding user response：

Not sure how it compares to presorting in regards to the performance, but you can use the Contains method of the list to check for elements

bool Equal(List<T> listA, List<T> listB){
  bool equal = true;
  foreach(var element in listA){
    if(!listB.Contains(element)){
      equal = false;
      break;
    }
  }
  return equal;
}

Note that count of both lists isn't compared as it was assumed that they are equal.