C# program to reverse a list of cities using LINQ

In C#, LINQ (Language Integrated Query) is a powerful function that allows us to query various data sources, including arrays, lists, and databases. It is an efficient and concise way to manipulate data and has become an essential tool for developers. In this article, we will explore how to reverse a list of cities in C# using LINQ.

Before we dive into the code, let’s first understand what LINQ is. LINQ is a set of extensions to the .NET Framework that provides a standard way to query data from different data sources using a common syntax. It allows developers to write queries similar to SQL statements, making it easier to manipulate data in a more readable and concise manner.

Method: Using LINQ

Using LINQ to reverse the city list, we can use the Reverse() extension method provided by LINQ. Here are examples of what we can do:

Example

using System.IO;
using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;

class Program {
   static void Main() {
      List<string> cities = new List<string> {"New York", "Paris", "Tokyo", "London"};
   
      var reversedCities = cities.AsEnumerable().Reverse();
   
      foreach (var city in reversedCities) {
         Console.WriteLine(city);
      }
   }
}

Output

London
Tokyo
Paris
New York

In this code, we first initialize a string list named cities, which contains four elements: "New York", "Paris", "Tokyo" and "London".

Next, we use the AsEnumerable() method to convert the list into an enumerable sequence, which can then be used with LINQ extension methods. We then use the Reverse() extension method to reverse the order of the elements in the sequence.

Finally, we use a foreach loop to iterate over the reverse sequence and print each element to the console.

in conclusion

In this article, we explored how to reverse a list of cities in C# using LINQ. By using the Reverse() extension method provided by LINQ, we can reverse the order of elements in a list efficiently and easily. This method is concise and easy to read, making it an essential tool for any C# developer.

In general, LINQ is a powerful feature that simplifies the process of querying and manipulating data in C#. By understanding how to use LINQ, we can become more effective programmers and develop better solutions to complex problems.

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