Question

In C# using a Console App, create an array that stores 20 integer values. Use the random number generator to select an integer value between 0 and 10. Store the 20 random integers in the array.

Once the array has been created:

1. Print the values in the array.
2. Print the values in the array in reverse order.
3. Sort and print the values in the array in ascending order.
4. Sort and print the values in the array in descending order.
5. Count the number of duplicate values in the array.
6. Display the average of the values in the array.
7. Display the average of the odd values in the array.
8. Create a second array that stores 2 integer values.
   a) Use a random number generator to store an integer value between 1 and 5.
   b) Multiply the odd positioned values in the first array with the value in position 0 of the second array.
   c) Multiply the even positioned values in the first array with the value in position 1 of the second array.
   d) Display the new values of the first array.

Answer 1

using System;  

public class Exercise1  

{  

public static void Main()  

{  

public class RandomGenerator  

{  

private readonly Random _random = new Random();  

public int RandomNumber(int min, int max)  

{  

  return _random.Next(min, max);  

}  

}

int[] arr = new int[10];

var generator = new RandomGenerator();

int i;  

int count=0;

int average =0;

int sum=0;

int even=0;

int odd=0;

int evenaverage=0;

int oddaverage=0;

Console.Write("\n\nRead and Print elements of an array:\n");

Console.Write("Input 10 elements in the array :\n");  

for(i=0; i<10; i++)  

{  

Console.Write("element - {0} : ",i);

arr[i] = generator.RandomNumber(1, 20);

}

Console.Write("\nElements in array are: ");  

for(i=0; i<10; i++)  

{  

Console.Write("{0} ", arr[i]);  

}   

Console.Write("\nElements in array in reverse order are: ");  

for(i=10; i>0; i--)  

{  

Console.Write("{10} ", arr[i]);  

}

//Sorting the values  

        for (i = 0; i <=10; i++)  

        {  

            for (int j = 0; j <=9; j++)  

            {  

                if (a[j] > a[j + 1])  

                {  

                    int temp = a[j];  

                    a[j] = a[j + 1];  

                    a[j + 1] = temp;  

                }  

            }  

        }  

        Console.Write("Ascending Sort : ");  

        for (i = 0; i <10; i++)  

        {

            Console.Write(a[i]+" ");

}

Console.Write("Decending Sort : ");  

        for (i = 10; i >0; i--)  

        {

            Console.Write(a[i]+" ");

}

// Duplicate value count

for (i = 0; i < 10; i++)

{

for (j = i + 1; j < 10; j++)

{

// If duplicate element found then increment count by 1

if (arr[i] == arr[j])

{

count++;

break;

}

}

}

Console.WriteLine("\n Total number of duplicate elements found in array:"+count);

// Find Average of array

    for (int i = 0; i < 10; i++)
        {
            sum += arr[i];          

if (i % 2 == 0)

                even += arr[i];

  else

                odd += arr[i];

        }
    average = sum / 10; 
    Console.WriteLine("Average Of Array is : " + average);
    Console.ReadLine();
    evenaverage = even / 10;
    Console.WriteLine("Even Average Of Array is : " + evenaverage);      
    Console.ReadLine();
    oddaverage = odd / 10;
    Console.WriteLine("Odd Average Of Array is : " + oddaverage); 
    Console.ReadLine();

}

}