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C#: Create a new string from a given string without the first two characters


C# Sharp Basic Algorithm: Exercise-85 with Solution

Write a C# Sharp program to create a new string from a given string without the first two characters. Keep the first character if it is "p" and keep the second character if it is "y".

Visual Presentation:

C# Sharp: Basic Algorithm Exercises - Create a new string from a given string without the first two characters.

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("abcab")); // Pass "abcab" 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("press")); // Pass "press" to the test function and display the result
            Console.WriteLine(test("jython")); // Pass "jython" 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)
        {
            if (s1.Length >= 2) // If the length of 's1' is greater than or equal to 2
            {
                // If the character at index 1 of 's1' is not equal to "y", remove the character at index 1
                if (String.Compare(s1.Substring(1, 1), "y") != 0)
                {
                    s1 = s1.Remove(1, 1);
                }

                // If the character at index 0 of 's1' is not equal to "p", remove the character at index 0
                if (String.Compare(s1.Substring(0, 1), "p") != 0)
                {
                    s1 = s1.Remove(0, 1);
                }
            }
            else if (s1.Length > 0 && String.Compare(s1.Substring(0, 1), "p") != 0)
            {
                // If 's1' has a length greater than 0 and the character at index 0 is not "p", remove the character at index 0
                s1 = s1.Remove(0, 1);
            }

            return s1; // Return the modified or unchanged 's1'
        }
    }
}

Sample Output:

cab
python
pess
ython

Flowchart:

C# Sharp: Flowchart: Create a new string from a given string without the first two characters

C# Sharp Code Editor:

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Previous: Write a C# Sharp program to create a new string from a given string. If the two characters of the given string from its beginning and end are same return the given string without the first two characters otherwise return the original string.
Next: Write a C# Sharp program to create a new string from a given string without the first and last character if the first or last characters are 'a' otherwise return the original given string.

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