Step by Step solution about How to resolve the algorithm Comma quibbling step by step in the C# programming language

Code Overview

This code implements a "comma quibbling" function that takes an array of strings and returns a formatted string that meets specific rules for comma usage.

Main Function (Main)

• The Main method is the entry point of the program.
• It creates several test cases and calls the Quibble function on them, printing the results to the console.

Quibble Function

• The Quibble function takes an array of strings as input and returns a formatted string.
• It follows these rules for comma usage:
  • No comma after the last item.
  • "and" before the second-to-last item.
  • Commas between all other items.

** Implementation Details**

• The code uses String.Join to concatenate the input strings into a single string.
• It uses Enumerable.Reverse to reverse the order of the input strings.
• It uses Enumerable.Zip to combine the reversed input strings with an array of separators (", ", " and ", ", "") that define the comma usage.
• The resulting sequences are then reversed to restore the original order.
• The concatenated string is enclosed in curly braces using String.Format.

Example Output

{}
{ABC}
{ABC, and DEF}
{ABC, DEF, G, and H}

Notes

• This code uses C# language features like LINQ (Language Integrated Query) and lambda expressions for concise and readable implementation.
• The comma quibbling rules can be customized by modifying the separator array used in the Zip operation.
• The number of input strings can be arbitrary.

using System;
using System.Linq;

namespace CommaQuibbling
{
    internal static class Program
    {
        #region Static Members
	private static string Quibble(string[] input)
	{
            return
                String.Format("{{{0}}}",
                    String.Join("",
                        input.Reverse().Zip(
                            new [] { "", " and " }.Concat(Enumerable.Repeat(", ", int.MaxValue)),
                            (x, y) => x + y).Reverse()));
	}


        private static void Main()
        {
            Console.WriteLine( Quibble( new string[] {} ) );
            Console.WriteLine( Quibble( new[] {"ABC"} ) );
            Console.WriteLine( Quibble( new[] {"ABC", "DEF"} ) );
            Console.WriteLine( Quibble( new[] {"ABC", "DEF", "G", "H"} ) );

            Console.WriteLine( "< Press Any Key >" );
            Console.ReadKey();
        }

        #endregion
    }
}