初始化一个HashSet。
var h = new HashSet(arr1);
上面，我们在HashSet中设置了一个数组。以下是数组 -
string[] arr1 = {
"electronics",
"accessories”,
"electronics",
};以下示例展示了如何在 C# 中实现 HashSet -
示例
using System;
using System.Collections.Generic;
using System.Linq;
class Program {
static void Main() {
string[] arr1 = {
"electronics",
"accessories”,
"electronics",
};
Console.WriteLine(string.Join(",", arr1));
// HashSet
var h = new HashSet(arr1);
// eliminates duplicate words
string[] arr2 = h.ToArray();
Console.WriteLine(string.Join(",", arr2));
}
} 
