C#中获取两个HashSet的并集

让我们看一个示例，获取两个HashSet的并集

示例

using System; using System.Collections.Generic; public class Demo { public static void Main(){ HashSet<int> set1 = new HashSet<int>(); set1.Add(100); set1.Add(200); set1.Add(300); set1.Add(400); set1.Add(500); set1.Add(600); Console.WriteLine("HashSet1 elements..."); foreach(int ele in set1){ Console.WriteLine(ele); } HashSet<int> set2 = new HashSet<int>(); set2.Add(100); set2.Add(200); set2.Add(300); set2.Add(400); set2.Add(500); set2.Add(600); Console.WriteLine("HashSet2 elements..."); foreach(int ele in set2){ Console.WriteLine(ele); } Console.WriteLine("Union..."); set1.UnionWith(set2); foreach(int ele in set1){ Console.WriteLine(ele); } } }

输出结果

这将产生以下输出-

HashSet1 elements... 100 200 300 400 500 600 HashSet2 elements... 100 200 300 400 500 600 Union... 100 200 300 400 500 600

示例

现在让我们来看另一个示例-

using System; using System.Collections.Generic; public class Demo { public static void Main(){ HashSet<int> set1 = new HashSet<int>(); set1.Add(100); set1.Add(200); set1.Add(300); set1.Add(400); set1.Add(500); set1.Add(600); Console.WriteLine("HashSet1 elements..."); foreach(int ele in set1){ Console.WriteLine(ele); } HashSet<int> set2 = new HashSet<int>(); set2.Add(100); set2.Add(250); set2.Add(300); Console.WriteLine("HashSet2 elements..."); foreach(int ele in set2){ Console.WriteLine(ele); } Console.WriteLine("Union..."); set1.UnionWith(set2); foreach(int ele in set1){ Console.WriteLine(ele); } } }

输出结果

这将产生以下输出-

HashSet1 elements... 100 200 300 400 500 600 HashSet2 elements... 100 250 300 Union... 100 200 300 400 500 600 250