叠加。C# 中的清除方法
原文:https://www . geesforgeks . org/stack-clear-method-in-c-sharp/
该方法(属于系统。集合命名空间)用于从堆栈中移除所有对象。此方法将堆栈计数设置为零，并且集合元素中对其他对象的引用也将被移除。这个方法是一个 O(n)运算，其中 n 是 Count。
语法:
public virtual void Clear ();
以下程序说明了上述方法的使用:
例 1:
// C# code to illustrate the
// Stack.Clear Method
using System;
using System.Collections;
class GFG {
// Driver code
public static void Main()
{
// Creating a Stack
Stack myStack = new Stack();
// Inserting the elements into the Stack
myStack.Push("1st Element");
myStack.Push("2nd Element");
myStack.Push("3rd Element");
myStack.Push("4th Element");
myStack.Push("5th Element");
myStack.Push("6th Element");
// Displaying the count of elements
// contained in the Stack before
// removing all the elements
Console.Write("Total number of elements"+
" in the Stack are : ");
Console.WriteLine(myStack.Count);
// Removing all elements from Stack
myStack.Clear();
// Displaying the count of elements
// contained in the Stack after
// removing all the elements
Console.Write("Total number of elements"+
" in the Stack are : ");
Console.WriteLine(myStack.Count);
}
}
输出:
Total number of elements in the Stack are : 6
Total number of elements in the Stack are : 0
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