C#: Check a given array of integers of length 1 or more and return true if the first element and the last element are equal in the given array

Last update on June 27 2025 13:06:30 (UTC/GMT +8 hours)

First and Last Array Elements Equal

Write a C# Sharp program to check a given array of integers of length 1 or more. Return true if the first and the last element in the array are equal.

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
        {
            // Output the results of the 'test' function with different integer arrays as arguments
            Console.WriteLine(test(new[] { 10, 20, 40, 50 })); // Calling test method with array [10, 20, 40, 50] and displaying the result
            Console.WriteLine(test(new[] { 10, 20, 40, 10 })); // Calling test method with array [10, 20, 40, 10] and displaying the result
            Console.WriteLine(test(new[] { 12, 24, 35, 55 })); // Calling test method with array [12, 24, 35, 55] and displaying the result

            Console.ReadLine(); // Waiting for user input before closing the console window
        }

        // Method to check if the first and last elements of an array are equal
        public static bool test(int[] nums)
        {
            // Returns true if the array length is greater than 0 and the first and last elements are equal
            return nums.Length > 0 && nums[0] == nums[nums.Length - 1];
        }
    }
}

Sample Output:

False
True
False

Flowchart:

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