What are collection classes in C#?
Collection classes serve various purposes, such as allocating memory dynamically to elements and accessing a list of items on the basis of an index etc.
The following are the classes in Collections −
| Sr.No | Class & Description & Useage |
|---|
| 1 | ArrayList
It represents ordered collection of an object that can be indexed individually.
|
| 2 | Hashtable
It uses a key to access the elements in the collection.
|
| 3 | SortedList
It uses a key as well as an index to access the items in a list.
|
| 4 | Stack
It represents a last-in, first out collection of object.
|
| 5 | Queue
It represents a first-in, first out collection of object.
|
| 6 | BitArray
It represents an array of the binary representation using the values 1 and 0.
|
Let us see an example of the BitArray class in C# −
Example
Live Demo
using System;
using System.Collections;
namespace CollectionsApplication {
class Program {
static void Main(string[] args) {
//creating two bit arrays of size 8
BitArray ba1 = new BitArray(8);
BitArray ba2 = new BitArray(8);
byte[] a = { 60 };
byte[] b = { 13 };
//storing the values 60, and 13 into the bit arrays
ba1 = new BitArray(a);
ba2 = new BitArray(b);
//content of ba1
Console.WriteLine("Bit array ba1: 60");
for (int i = 0; i < ba1.Count; i++) {
Console.Write("{0, -6} ", ba1[i]);
}
Console.WriteLine();
//content of ba2
Console.WriteLine("Bit array ba2: 13");
for (int i = 0; i < ba2.Count; i++) {
Console.Write("{0, -6} ", ba2[i]);
}
Console.WriteLine();
BitArray ba3 = new BitArray(8);
ba3 = ba1.And(ba2);
//content of ba3
Console.WriteLine("Bit array ba3 after AND operation: 12");
for (int i = 0; i < ba3.Count; i++) {
Console.Write("{0, -6} ", ba3[i]);
}
Console.WriteLine();
ba3 = ba1.Or(ba2);
//content of ba3
Console.WriteLine("Bit array ba3 after OR operation: 61");
for (int i = 0; i < ba3.Count; i++) {
Console.Write("{0, -6} ", ba3[i]);
}
Console.WriteLine();
Console.ReadKey();
}
}
}Output
Bit array ba1: 60
False False True True True True False False
Bit array ba2: 13
True False True True False False False False
Bit array ba3 after AND operation: 12
False False True True False False False False
Bit array ba3 after OR operation: 61
True False True True False False False False
Published on 08-Aug-2018 09:27:45
