C#: Alphabet position in a string

Last update on August 25 2025 12:50:18 (UTC/GMT +8 hours)

Write a C# Sharp program that displays all the characters with their respective numbers from a string.

Sample Data:
("C Sharp") -> " 3 19 8 1 18 16"
("The quick brown fox jumps over the lazy dog.") -> " 20 8 5 17 21 9 3 11 2 18 15 23 14 6 15 24
10 21 13 16 19 15 22 5 18 20 8 5 12 1 26 25 4 15 7"
("HTML Tutorial") -> " 8 20 13 12 20 21 20 15 18 9 1 12 "

Sample Solution-1:

C# Sharp Code:

using System;
using System.Linq;

namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            // Declare and initialize a string variable
            string text = "The quick brown fox jumps over the lazy dog.";

            // Display the original string
            Console.WriteLine("Original string: " + text);

            // Display the alphabet positions of characters in the string
            Console.WriteLine("Alphabet position in the said string: " + test(text));

            // Change the value of text
            text = "C Sharp";

            // Display the new original string
            Console.WriteLine("\nOriginal string: " + text);

            // Display the alphabet positions of characters in the string
            Console.WriteLine("Alphabet position in the said string: " + test(text));

            // Change the value of text
            text = "HTML Tutorial";

            // Display the new original string
            Console.WriteLine("\nOriginal string: " + text);

            // Display the alphabet positions of characters in the string
            Console.WriteLine("Alphabet position in the said string: " + test(text));
        }  

        // Define a method 'test' that takes a string argument 'text' and returns a string
        public static string test(string text)
        {
            // Convert the characters to lowercase, filter only alphabetic characters, calculate their alphabet positions,
            // and convert these positions to an array of integers
            var char_positions = text.ToLower().Where(ch => Char.IsLetter(ch)).
                Select(ch => (int)ch % 32).ToArray();

            // Join the array elements into a string separated by spaces and return it
            return string.Join(" ", char_positions);
        }
    }
}

Sample Output:

Original string: The quick brown fox jumps over the lazy dog.
Alphabet position in the said string: 20 8 5 17 21 9 3 11 2 18 15 23 14 6 15 24 10 21 13 16 19 15 22 5 18 20 8 5 12 1 26 25 4 15 7

Original string: C Sharp
Alphabet position in the said string: 3 19 8 1 18 16

Original string: HTML Tutorial
Alphabet position in the said string: 8 20 13 12 20 21 20 15 18 9 1 12

Flowchart :

Sample Solution-2:

C# Sharp Code:

using System;
using System.Linq;

namespace exercises
{
    class Program
    {
        static void Main(string[] args)
        {
            // Declare and initialize a string variable
            string text = "The quick brown fox jumps over the lazy dog.";

            // Display the original string
            Console.WriteLine("Original string: " + text);

            // Display the alphabet positions of characters in the string
            Console.WriteLine("Alphabet position in the said string: " + test(text));

            // Change the value of text
            text = "C Sharp";

            // Display the new original string
            Console.WriteLine("\nOriginal string: " + text);

            // Display the alphabet positions of characters in the string
            Console.WriteLine("Alphabet position in the said string: " + test(text));

            // Change the value of text
            text = "HTML Tutorial";

            // Display the new original string
            Console.WriteLine("\nOriginal string: " + text);

            // Display the alphabet positions of characters in the string
            Console.WriteLine("Alphabet position in the said string: " + test(text));
        }  

        // Define a method 'test' that takes a string argument 'text' and returns a string
        public static string test(string text)
        {
            // Use LINQ to filter only alphabetic characters, calculate their alphabet positions (A=1, B=2,...,Z=26),
            // and convert these positions to a string separated by spaces
            return String.Join(" ", text.Where(ch => char.IsLetter(ch)).Select(ch => (int)ch % 32));
        }
    }
}

Sample Output:

Original string: The quick brown fox jumps over the lazy dog.
Alphabet position in the said string: 20 8 5 17 21 9 3 11 2 18 15 23 14 6 15 24 10 21 13 16 19 15 22 5 18 20 8 5 12 1 26 25 4 15 7

Original string: C Sharp
Alphabet position in the said string: 3 19 8 1 18 16

Original string: HTML Tutorial
Alphabet position in the said string: 8 20 13 12 20 21 20 15 18 9 1 12

Flowchart :

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