BiggerThan2Neighbours

using System;

/*5. Write a method that checks if the element at given position in given array of integers is bigger than its two neighbors (when such exist).*/

class BiggerThan2Neighbours
{
    static void Main()
    {
        //input
        Console.Write("Length of the array: ");
        int length = int.Parse(Console.ReadLine());

        int[] array = new int[length];
        for (int i = 0; i < length; i++)
        {
            Console.Write("arr[{0}]: ", i);
            array[i] = int.Parse(Console.ReadLine());
        }

        Console.Write("Position of the element to be compared to its two neighbours: ");
        int position = int.Parse(Console.ReadLine());

        //print
        if (position == 0 || position == array.Length - 1)
        {
            FirstLastPosition(array, position);
        }
        else if (position < 0 || position > array.Length - 1)
        {
            Console.WriteLine("Invalid position!");
            return;
        }
        else
        {
            CompareIntegers(array, position);
        }
    }

    private static void CompareIntegers(int[] array, int position)
    {
        if (array[position] > array[position + 1] && array[position] > array[position - 1])
        {
            Console.WriteLine("The element {0} at position {1} is bigger than its two neighbours", array[position], position);
        }
        else if (array[position] > array[position + 1])
        {
            Console.WriteLine("The element {0} at position {1} is bigger only than its right-hand neighbour", array[position], position);
        }
        else if (array[position] > array[position - 1])
        {
            Console.WriteLine("The element {0} at position {1} is bigger only than its left-hand neighbour", array[position], position);
        }
        else
        {
            Console.WriteLine("The element {0} at position {1} is NOT bigger than its two neighbours", array[position], position);
        }
    }

    // if the element is at first or last position
    private static void FirstLastPosition(int[] array, int position)
    {
        if (position == 0 && (array[position] > array[position + 1]))
        {
            Console.WriteLine("The element {0} at position {1} is bigger than its only neighbour", array[position], position);
        }
        else if (position == array.Length - 1 && array[position] > array[array.Length - 2])
        {
            Console.WriteLine("The element {0} at position {1} is bigger than its only neighbour", array[position], position);
        }
        else
        {
            Console.WriteLine("The element {0} at position {1} is NOT bigger than its only neighbour", array[position], position);
        }
    }
}