C#中各种类型集合的特点详解

ArrayList list = new ArrayList();
list.Add(1);
list.Add("two");

Hashtable table = new Hashtable();
table.Add("key", "value");

Stack<object> stack = new Stack<object>();
stack.Push(1);
stack.Push("two");
object top = stack.Pop(); // "two"

Queue<object> queue = new Queue<object>();
queue.Enqueue(1);
queue.Enqueue("two");
object front = queue.Dequeue(); // 1

List<int> numbers = new List<int>();
numbers.Add(1);
numbers.Add(2);

var hashSet = new HashSet<string>();
hashSet.Add("a");
hashSet.Add("c");
hashSet.Add("b");
hashSet.Add("a");
hashSet.Add("c");
hashSet.Add("b");
foreach (var item in hashSet)
{
	Console.WriteLine(item);
}
/*输出结果
 a
 b
 c
 */

Dictionary<string, int> scores = new Dictionary<string, int>();
scores.Add("Alice", 90);
scores.Add("Bob", 80);

var sortDic = new SortedDictionary<int, string>();
sortDic.Add(10, "十");
sortDic.Add(5, "五");
sortDic.Add(1, "一");
Console.WriteLine(sortDic.Keys);
foreach (var item in sortDic)
{
	Console.WriteLine($"{item.Key}~{item.Value}");
}
/*输出结果
 1~一
 5~五
 10~十
 */

var queue = new Queue<int>();
queue.Enqueue(1);
queue.Enqueue(2);
queue.Enqueue(3);
foreach (var item in queue)
{
	Console.WriteLine(item);
}
Console.WriteLine($"dequeue元素：{queue.Dequeue()}");
/*输出结果
 1
 2
 3
 dequeue元素：1
 */

var stack = new Stack<int>();
stack.Push(1);
stack.Push(2);
stack.Push(3);
foreach (var item in stack)
{
	Console.WriteLine(item);
}
//pop元素
Console.WriteLine($"pop元素:{stack.Pop()}");
/*输出结果
 3
 2
 1
 pop元素：3
 */

var linkedList = new LinkedList<string>();
linkedList.AddLast("2");
linkedList.AddLast("3");
linkedList.AddLast("5");
linkedList.AddFirst("1");
linkedList.AddBefore(linkedList.Find("5"), "4");
foreach (var item in linkedList)
{
	Console.WriteLine(item);
}
Console.WriteLine($"2前面的值:{linkedList.Find("2").Previous.Value}");
Console.WriteLine($"2后面的值:{linkedList.Find("2").Next.Value}");
/*输出结果
 1
 2
 3
 4
 5
 2前面的值:1
 2后面的值:3
 */