using System;

​

public class Program

{

    public static void Main()

    {

        int start = 7;

        int end = -14;

        int[] nums = createRandomArray(10);

        Console.WriteLine("The array is:");

        printArr(nums);

        Console.WriteLine();

        Console.WriteLine("The Sum of the Array is: {0}", arraySum(nums));

        Console.WriteLine();

        int diff = bigMinusLittle(nums);

        Console.WriteLine("The difference between the biggest and smallest number is: {0}", diff);

        Console.WriteLine();

        Console.WriteLine("The values from {0} to {1} are :", start, end);

        printArr(startEnd(start, end));

        Console.WriteLine();

        Console.WriteLine("The rotated array is ");

        printArr(rotate(nums));

        Console.WriteLine();

    }

​

    public static int arraySum(int[] nums)

    {

        int result = 0;

        foreach (int i in nums){

            result += i;

        }

        return result;

    }

​

    public static int[] startEnd(int start, int end)

    {

        if (start<=end){

            int[] result = new int[(end-start)+1];

            for (int i = start; i< end+1;i++)

                result[i-start] = i;

            return result;

        }

        else{

            int[] result = new int[(start-end)+1];

            int arrayPos = 0;

            for (int i = start; i> end-1;i--){

            result[arrayPos] = i;

                arrayPos++;

            }

            return result;

        }

    }

​

    public static int bigMinusLittle(int[] nums)

    {

        int biggestNum = nums[0];

        int smallestNum = nums[0];

            foreach (int i in nums){

            biggestNum = Math.Max(biggestNum,i);    

            }

            foreach (int i in nums){

            smallestNum = Math.Min(smallestNum,i);  

            }

        //Console.WriteLine(smallestNum);

        //Console.WriteLine(biggestNum);

        return biggestNum - smallestNum;

    }

​

    public static int[] rotate(int[] nums)

    {

        int[] result = new int[nums.Length];

        for (int i = 0; i<nums.Length;i++){

            if (i == nums.Length-1)

            result[i] = nums[0];

            else

            result[i] = nums[i+1];

        }

        return result;

    }

​

    public static int[] createRandomArray(int size)

    {

        int[] array = new int[size];

        Random rnd = new Random();

        for (int i = 0; i < size; i++)

        {

            array[i] = rnd.Next(0, 100);

        }

​

        return array;

    }

​

    public static void printArr(int[] nums)

    {

        System.Console.Write("(");

        for (int i = 0; i < nums.Length; i++)

        {

            System.Console.Write(nums[i]);

            if (i == nums.Length - 1)

            {

            }

            else

            {

                System.Console.Write(", ");

            }

        }

​

        System.Console.WriteLine(")");

    }

}