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Check if a HashSet is a proper subset of the specified collection in C#
To check if a HashSet is a proper subset of the specified collection, try the following code −
Example
using System;
using System.Collections.Generic;
public class Demo {
public static void Main(){
HashSet<int> set1 = new HashSet<int>();
set1.Add(70);
set1.Add(100);
set1.Add(125);
set1.Add(150);
Console.WriteLine("Elements in HashSet1");
foreach(int val in set1){
Console.WriteLine(val);
}
HashSet<int> set2 = new HashSet<int>();
set2.Add(30);
set2.Add(60);
set2.Add(70);
set2.Add(80);
set2.Add(100);
set2.Add(125);
set2.Add(150);
set2.Add(200);
Console.WriteLine("Elements in HashSet2");
foreach(int val in set2){
Console.WriteLine(val);
}
Console.WriteLine("Is set1 a proper subset of set2? "+set1.IsProperSubsetOf(set2));
}
}Output
This will produce the following output −
Elements in HashSet1 70 100 125 150 Elements in HashSet2 30 60 70 80 100 125 150 200 Is set1 a proper subset of set2? True
Example
Let us now see another example −
using System;
using System.Collections.Generic;
public class Demo {
public static void Main(){
HashSet<int> set1 = new HashSet<int>();
set1.Add(10);
set1.Add(20);
Console.WriteLine("Elements in HashSet1");
foreach(int val in set1){
Console.WriteLine(val);
}
HashSet<int> set2 = new HashSet<int>();
set2.Add(30);
set2.Add(60);
set2.Add(70);
set2.Add(80);
set2.Add(100);
set2.Add(125);
set2.Add(150);
set2.Add(200);
Console.WriteLine("Elements in HashSet2");
foreach(int val in set2){
Console.WriteLine(val);
}
Console.WriteLine("Is set1 a proper subset of set2? "+set1.IsProperSubsetOf(set2));
}
}Output
This will produce the following output −
Elements in HashSet1 10 20 Elements in HashSet2 30 60 70 80 100 125 150 200 Is set1 a proper subset of set2?False
Updated on: 04-Dec-2019
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