C#: Create a new string using 3 copies of the first 2 characters of a given string

Last update on June 27 2025 13:06:27 (UTC/GMT +8 hours)

Three Copies of First Two Characters

Write a C# Sharp program to create a new string using 3 copies of the first 2 characters of a given string. If the string length is less than 2 use the whole string.

Visual Presentation:

C# Sharp: Basic Algorithm Exercises - Create a new string using 3 copies of the first 2 characters of a given string.

Sample Solution:-

C# Sharp Code:

using System; // Importing the System namespace

namespace exercises // Defining a namespace called 'exercises'
{
    class Program // Defining a class named 'Program'
    {
        static void Main(string[] args) // The entry point of the program
        {
            // Output the results of the test function with different strings as arguments
            Console.WriteLine(test("abc")); // Pass "abc" to the test function and display the result
            Console.WriteLine(test("Python")); // Pass "Python" to the test function and display the result
            Console.WriteLine(test("J")); // Pass "J" to the test function and display the result
            Console.ReadLine(); // Wait for user input before closing the console window
        }

        // Function definition of the test function that takes a string 's1' as input and returns a string
        public static string test(string s1)
        {
            string extra_Front = String.Empty; // Declaring an empty string variable 'extra_Front'

            if (s1.Length < 2) // If the length of 's1' is less than 2
            {
                return s1 + s1 + s1; // Return 's1' concatenated with itself three times
            }
            else // If the length of 's1' is 2 or more
            {
                extra_Front = s1.Substring(0, 2); // Extract the first two characters of 's1' and assign them to 'extra_Front'
                return extra_Front + extra_Front + extra_Front; // Return 'extra_Front' concatenated with itself three times
            }
        }
    }
}

Sample Output:

ababab
PyPyPy
JJJ

Flowchart:

Go to:

PREV : Combine Strings After Adjusting Lengths.
NEXT : Remove First Two if Start and End Match.

C# Sharp Code Editor:

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