C#: Create a coded string from a given string, using specified formula

Last update on June 24 2025 12:58:23 (UTC/GMT +8 hours)

Coded String Conversion

Write a C# Sharp program to create a coded string from a given string, using a specified formula.

Replace all 'P' with '9', 'T' with '0', 'S' with '1', 'H' with '6' and 'A' with '8'.

Sample Solution:

C# Sharp Code:

using System;

namespace exercises
{
    class Program
    {
        // Main method where the program execution begins
        static void Main(string[] args)
        {
            // Calls the test function with different string arguments and prints the results
            Console.WriteLine(test("PHP")); // Output: 968
            Console.WriteLine(test("JAVASCRIPT")); // Output: J9781691
        }

        // Function to replace specific characters in a string with corresponding digits
        public static string test(string str1)
        {
            // Using multiple calls to Replace method to replace characters with specific digits
            return str1.Replace("P", "9").Replace("T", "0").Replace("S", "1").Replace("H", "6").Replace("A", "8");
        }
    }
}

Sample Output:

969
J8V81CRI90

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program to encode a string using a custom rule: replace vowels with '*'.
Write a C# program to encode a string by shifting each character's ASCII code by 3.
Write a C# program to decode a string that was previously encoded with letter-to-digit mapping.
Write a C# program to encode each word in a string individually using a reversed letter mapping.

Go to:

PREV : Min Value from Two String Numbers.
NEXT : Count Specific Character in String.

C# Sharp Code Editor: