Question1

using System;
using System.Linq;
using System.Linq.Expressions;
using System.Runtime.InteropServices;

namespace ConsoleApp1
{
    class Question1
    {
        /*
            A function that tells if a given array is sorted by ascending/descending order or not.
            Input: arr - The array we wish to check.
            Output: 1 - sorted by ascending order, 2 - sorted by descending order, 3 - not sorted at all.
         */

        public static int IsArraySorted(int[] arr)
        {
            bool sortedAscending = true, sortedDescending = true;
            int i = 0, returnAnswer = 0; // Variable loop

            for (i = 0; i < arr.Length - 1; i++) // Avoid out of bounds exceptions.
            {
                if (arr[i] < arr[i + 1]) // Not descending, a value ahead is greater
                {
                    sortedDescending = false;
                }
                else if (arr[i] > arr[i + 1]) // Not ascending... A value ahead is smaller
                {
                    sortedAscending = false;
                }
            }

            // Avoid having multiple return statements:

            if (sortedAscending)
            {
                returnAnswer = 1;
            }
            else if (sortedDescending)
            {
                returnAnswer = 2;
            }
            else
            {
                returnAnswer = 3;
            }

            return returnAnswer;
        }
    }
}