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C# Stack.Pop()用法及代碼示例


此方法(位於System.Collections命名空間下)用於刪除並返回堆棧頂部的對象。此方法與Peek方法相似，但是Peek不會修改堆棧。

用法:

public virtual object Pop ();

返回值：它返回從堆棧頂部刪除的對象。


異常：如果堆棧為空，則此方法將提供InvalidOperationException。

以下示例程序旨在說明上述方法的用法：

示例1:

// C# Program to illustrate the  
// use of Stack.Pop() Method 
using System; 
using System.Collections; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // Creating a Stack 
        Stack myStack = new Stack(); 
  
        // Inserting the elements into the Stack 
        myStack.Push("Geeks"); 
        myStack.Push("Geeks Classes"); 
        myStack.Push("Noida"); 
        myStack.Push("Data Structures"); 
        myStack.Push("GeeksforGeeks"); 
  
        Console.WriteLine("Number of elements in the Stack: {0}", 
                                                 myStack.Count); 
  
        // Retrieveing top element of Stack 
        Console.Write("Top element of Stack is: "); 
        Console.Write(myStack.Pop()); 
  
        // printing the no of Stack element 
        // after Pop operation 
        Console.WriteLine("\nNumber of elements in the Stack: {0}", 
                                                    myStack.Count); 
    } 
}
輸出： 
Number of elements in the Stack: 5
Top element of Stack is: GeeksforGeeks
Number of elements in the Stack: 4

示例2:

// C# Program to illustrate the  
// use of Stack.Pop() Method 
using System; 
using System.Collections; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // Creating a Stack 
        Stack myStack = new Stack(); 
  
        // Inserting the elements into the Stack 
        myStack.Push(7); 
        myStack.Push(9); 
  
        Console.WriteLine("Number of elements in the Stack: {0}", 
                                                 myStack.Count); 
  
        // Retrieveing top element of Stack 
        Console.Write("Top element of Stack is: "); 
        Console.Write(myStack.Pop()); 
  
        // printing the no of Stack element 
        // after Pop operation 
        Console.WriteLine("\nNumber of elements in the Stack: {0}", 
                                                    myStack.Count); 
    } 
}
輸出： 
Number of elements in the Stack: 2
Top element of Stack is: 9
Number of elements in the Stack: 1

參考：



相關用法


注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 Stack.Pop() Method in C#。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。