Compares two lists. Considers list equal if two lists contains the same elements, element order is ignored. - CSharp System.Collections.Generic

CSharp examples for System.Collections.Generic:IList

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Description

Compares two lists. Considers list equal if two lists contains the same elements, element order is ignored.

Demo Code

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using System.Collections.Specialized;
using System.Collections.Generic;
using System.Collections;
using System;/*from   w  ww . j  a  v a2 s.com*/

public class Main{
        //-------------------------------------------------------------------------
    /// <summary>
    /// Compares two lists. 
    /// Considers list equal if two lists contains the same elements,
    /// element order is ignored.
    /// </summary>
    /// <typeparam name="T">type of list elements</typeparam>
    /// <param name="l1">first list</param>
    /// <param name="l2">second list</param>
    /// <returns>true if lists are equal, false otherwise</returns>
    static public bool CompareUnOrdered<T>(IList<T> l1, IList<T> l2)
    {
      if (l1 == null && l2 == null)
      {
        return true;
      }
      if (l1 == null || l2 == null)
      {
        return false;
      }
      if (l1.Count != l2.Count)
      {
        return false;
      }
      foreach (T item in l1)
      {
        if (!l2.Contains(item))
        {
          return false;
        }
      }
      foreach (T item in l2)
      {
        if (!l1.Contains(item))
        {
          return false;
        }
      }
      return true;
    }
}

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