C#: Create a new array taking the first and last elements of a given array of integers and length 1 or more

Last update on June 27 2025 13:09:20 (UTC/GMT +8 hours)

First and Last Elements of Array

Write a C# Sharp program to create an array taking the first and last elements of a given array of integers and length 1 or more.

Visual Presentation:

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
        {         
            // Calling the 'test' method with an integer array as an argument and assigning the result to the 'item' array
            int[] item = test(new[] { 10, 20, -30, -40, 30 }); 
            //int[] item = test(new[] { 10 }); // Example of using 'test' method with a single-element array

            // Outputting text to indicate the start of displaying the new array
            Console.Write("New array: ");

            // Looping through each element of the 'item' array and displaying them
            foreach(var i in item)
            {
                Console.Write(i.ToString()+" "); // Displaying each element of the 'item' array separated by a space
            }
        }        

        // Method to create a new array containing the first and last elements of the input array
        public static int[]  test(int[] nums)
        {
            // Returning a new array with the first and last elements of the 'nums' array
            return new int[] { nums[0], nums[nums.Length - 1] };
        } 
    }
}

Sample Output:

New array: 10 30

Flowchart:

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