检查HashSet是否是C#中指定集合的​​子集

要检查HashSet是否是指定集合的子集，代码如下-

示例

using System; using System.Collections.Generic; public class Demo { public static void Main(){ HashSet<string> set1 = new HashSet<string>(); 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 subset of set2? "+set1.IsSubsetOf(set2)); } }

输出结果

这将产生以下输出-

Elements in HashSet1 EF OP Elements in HashSet2 KL MN OP QR Is set1 a subset of set2? False

示例

让我们看另一个例子-

using System; using System.Collections.Generic; public class Demo { public static void Main(){ HashSet<string> set1 = new HashSet<string>(); 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("OP"); set2.Add("QR"); Console.WriteLine("Elements in HashSet2"); foreach(string val in set2){ Console.WriteLine(val); } Console.WriteLine("Is set1 a subset of set2? "+set1.IsSubsetOf(set2)); } }

输出结果

这将产生以下输出-

Elements in HashSet1 EF OP Elements in HashSet2 EF OP QR Is set1 a subset of set2? True