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法學C# 中 Stack.Clear() 方法
C# 中的 Stack.Clear() 方法用於從 Stack 中刪除所有物件。
語法
語法如下 −
public virtual void Clear ();
示例
我們來看看一個示例 −
using System;
using System.Collections;
public class Demo {
public static void Main() {
Stack stack = new Stack();
stack.Push("Inspiron");
stack.Push("Alienware");
stack.Push("Projectors");
stack.Push("Monitors");
stack.Push("XPS");
stack.Push("Laptop");
stack.Push("Notebook");
Console.WriteLine("Stack elements...");
foreach(string val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("Count of elements = "+stack.Count);
stack.Push("Ultrabook");
stack.Push("Cameras");
stack.Push("Keyboards");
Console.WriteLine("
Stack elements...updated");
foreach(string val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("
Count of elements (updated) = "+stack.Count);
stack.Clear();
Console.Write("Count of elements (updated) = "+stack.Count);
}
}輸出
這將生成以下輸出 −
Stack elements... Notebook Laptop XPS Monitors Projectors Alienware Inspiron Count of elements = 7 Stack elements...updated Keyboards Cameras Ultrabook Notebook Laptop XPS Monitors Projectors Alienware Inspiron Count of elements (updated) = 10 Count of elements (updated) = 0
示例
我們再看一個示例 −
using System;
using System.Collections;
public class Demo {
public static void Main() {
Stack stack = new Stack();
stack.Push(150);
stack.Push(300);
stack.Push(500);
stack.Push(750);
stack.Push(1000);
stack.Push(1250);
stack.Push(1500);
stack.Push(2000);
stack.Push(2500);
Console.WriteLine("Stack elements...");
foreach(int val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("Count of elements = "+stack.Count);
stack.Push(3000);
stack.Push(3500);
stack.Push(4000);
Console.WriteLine("
Stack elements...updated");
foreach(int val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("
Count of elements (updated) = "+stack.Count);
stack.Clear();
Console.Write("Count of elements (updated) = "+stack.Count);
}
}輸出
這將生成以下輸出 −
Stack elements... 2500 2000 1500 1250 1000 750 500 300 150 Count of elements = 9 Stack elements...updated 4000 3500 3000 2500 2000 1500 1250 1000 750 500 300 150 Count of elements (updated) = 12 Count of elements (updated) = 0
更新於： 2019-12-04
207 次瀏覽
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