Sao chép Stack sang mảng Array trong C#

Để sao chép Stack<T> sang mảng, ta dùng phương thức CopyTo. Dưới đây là các ví dụ.

Ví dụ 1

using System;
using System.Collections.Generic;

public class Demo {
    public static void Main(){
        Stack<int> stack = new Stack<int>();
        stack.Push(10);
        stack.Push(20);
        stack.Push(30);
        stack.Push(40);
        stack.Push(50);
        stack.Push(60);
        stack.Push(70);
        stack.Push(80);
        stack.Push(90);
        stack.Push(100);
        
        Console.WriteLine("Displaying the stack...");
        foreach(int val in stack){
            Console.WriteLine(val);
        }
        
        int[] intArr = new int[stack.Count];
        stack.CopyTo(intArr, 0);
        
        Console.WriteLine("Displaying the array...");
        foreach(int val in intArr){
            Console.WriteLine(val);
        }
    }
}

Kết quả

Displaying the stack...
100
90
80
70
60
50
40
30
20
10
Displaying the array...
100
90
80
70
60
50
40
30
20
10

Ví dụ 2

using System;
using System.Collections.Generic;

public class Demo {
    public static void Main(){
        Stack<int> stack = new Stack<int>();
        stack.Push(10);
        stack.Push(20);
        stack.Push(30);
        stack.Push(40);
        stack.Push(50);
        
        Console.WriteLine("Displaying the stack...");
        foreach(int val in stack){
            Console.WriteLine(val);
        }
        
        int[] intArr = new int[10];
        stack.CopyTo(intArr, 2);
        
        Console.WriteLine("Displaying the array...");
        foreach(int val in intArr){
            Console.WriteLine(val);
        }
    }
}

Kết quả

Displaying the stack...
50
40
30
20
10
Displaying the array...
0
0
50
40
30
20
10
0
0
0