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Check if a HashSet is a superset of the specified collection in C#
To check if a HashSet is a superset of the specified collection, the code is as follows −
Example
using System; using System.Collections.Generic; public class Demo { public static void Main(){ HashSet<string> set1 = new HashSet<string>(); set1.Add("AB"); set1.Add("CD"); set1.Add("EF"); set1.Add("AB"); set1.Add("IJ"); set1.Add("KL"); set1.Add("EF"); set1.Add("OP"); Console.WriteLine("Elements in HashSet1"); foreach(string val in set1){ Console.WriteLine(val); } HashSet<string> set2 = new HashSet<string>(); set2.Add("EF"); set2.Add("KL"); Console.WriteLine("Elements in HashSet2"); foreach(string val in set2){ Console.WriteLine(val); } Console.WriteLine("Is set1 a superset of set2? "+set1.IsSupersetOf(set2)); } }
Output
This will produce the following output:
Elements in HashSet1 AB CD EF IJ KL OP Elements in HashSet2 EF KL Is set1 a superset of set2? True
Example
Let us see another example −
using System; using System.Collections.Generic; public class Demo { public static void Main(){ HashSet<string> set1 = new HashSet<string>(); set1.Add("IJ"); set1.Add("KL"); set1.Add("EF"); set1.Add("OP"); Console.WriteLine("Elements in HashSet1"); foreach(string val in set1){ Console.WriteLine(val); } HashSet<string> set2 = new HashSet<string>(); set2.Add("KL"); set2.Add("MN"); set2.Add("OP"); set2.Add("QR"); Console.WriteLine("Elements in HashSet2"); foreach(string val in set2){ Console.WriteLine(val); } Console.WriteLine("Is set1 a superset of set2? "+set1.IsSupersetOf(set2)); } }
Output
This will produce the following output −
Elements in HashSet1 IJ KL EF OP Elements in HashSet2 KL MN OP QR Is set1 a superset of set2? False
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