ArrayList.Capacity : ArrayList « System.Collections « C# / C Sharp by API

1. C# / C Sharp by API
2. System.Collections
3. ArrayList

ArrayList.Capacity

  

using System; 
using System.Collections; 
 
public class ArrayListDemo { 
  public static void Main() { 
    ArrayList al = new ArrayList(); 
     
    Console.WriteLine("Initial capacity: " + al.Capacity); 
    Console.WriteLine("Initial number of elements: " + al.Count); 
 
    Console.WriteLine(); 
 
    Console.WriteLine("Adding 6 elements"); 
    // Add elements to the array list 
    al.Add('C'); 
    al.Add('A'); 
    al.Add('E'); 
    al.Add('B'); 
    al.Add('D'); 
    al.Add('F'); 
 
    Console.WriteLine("Current capacity: " + 
                       al.Capacity); 
    Console.WriteLine("Number of elements: " + 
                       al.Count); 
 
    // Display the array list using array indexing. 
    Console.Write("Current contents: "); 
    for(int i=0; i < al.Count; i++) 
      Console.Write(al[i] + " "); 
    Console.WriteLine("\n"); 
 
    Console.WriteLine("Removing 2 elements"); 
    // Remove elements from the array list. 
    al.Remove('F'); 
    al.Remove('A'); 
 
    Console.WriteLine("Current capacity: " + 
                       al.Capacity); 
    Console.WriteLine("Number of elements: " + 
                       al.Count); 
 
    // Use foreach loop to display the list. 
    Console.Write("Contents: "); 
    foreach(char c in al) 
      Console.Write(c + " "); 
    Console.WriteLine("\n"); 
 
    Console.WriteLine("Adding 20 more elements"); 
    // Add enough elements to force al to grow. 
    for(int i=0; i < 20; i++) 
      al.Add((char)('a' + i)); 
    Console.WriteLine("Current capacity: " + 
                       al.Capacity); 
    Console.WriteLine("Number of elements after adding 20: " + 
                       al.Count); 
    Console.Write("Contents: "); 
    foreach(char c in al) 
      Console.Write(c + " "); 
    Console.WriteLine("\n"); 
 
    // Change contents using array indexing. 
    Console.WriteLine("Change first three elements"); 
    al[0] = 'X'; 
    al[1] = 'Y'; 
    al[2] = 'Z'; 
    Console.Write("Contents: "); 
    foreach(char c in al) 
      Console.Write(c + " "); 
    Console.WriteLine(); 
  } 
}

   
    
  

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