VB.Net - Stack堆栈
Stack表示对象的最后进先出集合。 当您需要项目的最后进入,首先访问时使用。 当您在列表中添加项目时,称为推送项目,当您删除它时,它被称为弹出项目。
堆栈类的属性和方法
属性 | 描述 |
---|---|
Count | Gets the number of elements contained in the Stack. 获取堆栈中包含的元素数。 |
S.N | 方法名称和用途 |
---|---|
1 | Public Overridable Sub Clear Removes all elements from the Stack. 从堆栈中删除所有元素。 |
2 | Public Overridable Function Contains (obj As Object) As Boolean Determines whether an element is in the Stack. 确定元素是否在堆栈中。 |
3 | Public Overridable Function Peek As Object Returns the object at the top of the Stack without removing it. 返回堆栈顶部的对象,而不删除它。 |
4 | Public Overridable Function Pop As Object Removes and returns the object at the top of the Stack. 删除并返回堆栈顶部的对象。 |
5 | Public Overridable Sub Push (obj As Object) Inserts an object at the top of the Stack. 在堆栈顶部插入一个对象。 |
6 | Public Overridable Function ToArray As Object() Copies the Stack to a new array. 将堆栈复制到新数组。 |
示例:
Module collections Sub Main() Dim st As Stack = New Stack() st.Push("A") st.Push("M") st.Push("G") st.Push("W") Console.WriteLine("Current stack: ") Dim c As Char For Each c In st Console.Write(c + " ") Next c Console.WriteLine() st.Push("V") st.Push("H") Console.WriteLine("The next poppable value in stack: {0}", st.Peek()) Console.WriteLine("Current stack: ") For Each c In st Console.Write(c + " ") Next c Console.WriteLine() Console.WriteLine("Removing values ") st.Pop() st.Pop() st.Pop() Console.WriteLine("Current stack: ") For Each c In st Console.Write(c + " ") Next c Console.ReadKey() End Sub End Module
Current stack: W G M A The next poppable value in stack: H Current stack: H V W G M A Removing values Current stack: G M A
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