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Check if two HashSet objects are equal in C#
To check if two HashSet objects are equal, the code is as follows −
Example
using System; using System.Collections.Generic; public class Demo { public static void Main(String[] args) { HashSet<string> set1 = new HashSet<string>(); set1.Add("A"); set1.Add("B"); set1.Add("C"); set1.Add("D"); set1.Add("E"); set1.Add("F"); set1.Add("G"); set1.Add("H"); Console.WriteLine("Elements in HashSet1..."); foreach (string res in set1) { Console.WriteLine(res); } HashSet<string> set2 = new HashSet<string>(); set2.Add("John"); set2.Add("Jacob"); set2.Add("Ryan"); set2.Add("Tom"); set2.Add("Andy"); set2.Add("Tim"); set2.Add("Steve"); set2.Add("Mark"); Console.WriteLine("Elements in HashSet2..."); foreach (string res in set2) { Console.WriteLine(res); } HashSet<string> set3 = new HashSet<string>(); set3 = set2; Console.WriteLine("Is HashSet3 equal to HashSet2? = "+set3.Equals(set2)); } }
Output
This will produce the following output −
Elements in HashSet1... A B C D E F G H Elements in HashSet2... John Jacob Ryan Tom Andy Tim Steve Mark Is HashSet3 equal to HashSet2? = True
Example
Let us see another example −
using System; using System.Collections.Generic; public class Demo { public static void Main(String[] args){ HashSet<string> set1 = new HashSet<string>(); set1.Add("A"); set1.Add("B"); set1.Add("C"); set1.Add("D"); set1.Add("E"); set1.Add("F"); set1.Add("G"); set1.Add("H"); Console.WriteLine("Elements in HashSet1..."); foreach (string res in set1){ Console.WriteLine(res); } HashSet<string> set2 = new HashSet<string>(); set2.Add("John"); set2.Add("Jacob"); set2.Add("Ryan"); set2.Add("Tom"); set2.Add("Andy"); set2.Add("Tim"); set2.Add("Steve"); set2.Add("Mark"); Console.WriteLine("Elements in HashSet2..."); foreach (string res in set2){ Console.WriteLine(res); } Console.WriteLine("Is HashSet2 equal to HashSet1? = "+set2.Equals(set1)); } }
Output
This will produce the following output −
Elements in HashSet1... A B C D E F G H Elements in HashSet2... John Jacob Ryan Tom Andy Tim Steve Mark Is HashSet2 equal to HashSet1? = False
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