Question

• Make a function that swaps the values that change the values between the parameters as the following rule.

• The functions swap takes 2, 3 or 4 parameters and these functions are implemented as the overloading functions.

  • swap(int &, int &) : change the values each other.
    swap(int &, int &, int &) : change the value with the order. [min, medium, max]
    swap(int &, int &, int &, int &) : change the value like circular-shift-right [A, B, C, D] = > [B, C, D, A]
  • For Example,
    • num1 = 15; num2 = 5; num3 = 30; num4 =40;
    • swap(num1, num2);
      • num1 will be 5 and num2 will be 15
    • swap(num1, num2, num3)
      • num1 will be 5, num2 will be 15, and num3 is 30
    • swap(num1, num2, num3, num4)
      • num1 is 5, num2 is 30, num3 is 40 and num4 is 15

Answer 1

Below is the swapping program in c# with given requirement. Added comments for each method for better understanding

using System;

namespace SwapNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            //default values given in the question are as below
            int num1 = 15;
            int num2 = 5;
            int num3 = 30;
            int num4 = 40;

            //call overloaded swap functions
            swap(num1, num2);
            swap(num1, num2, num3);
            swap(num1, num2, num3, num4);

            Console.ReadLine();
        }

        static void swap(int num1, int num2)
        {
            int temp;
            Console.WriteLine("Before swapping the numbers, num1 is {0} and num2 is {1}", num1, num2);
            temp = num1;
            num1 = num2;
            num2 = temp;
            Console.WriteLine("After swapping the numbers, num1 is {0} and num2 is {1}", num1, num2);
            Console.WriteLine("*********************************************************************");
        }

        //This will print number in [min, medium, max] order
        static void swap(int num1, int num2, int num3)
        {
            int min, medium, max;
            Console.WriteLine("Before swapping the numbers, num1 is {0}, num2 is {1} and num3 is {2}", num1, num2, num3);
            //Get samallest number among three numbers by calling smallestNumber method
            min = smallestNumber(num1, num2, num3);
            //Get medium number among three numbers by calling mediumNumber method
            medium = mediumNumber(num1, num2, num3);
            //Get larget number among three numbers by calling largestNumber method
            max = largestNumber(num1, num2, num3);
            Console.WriteLine("After swapping the numbers, num1 is {0}, num2 is {1} and num3 is {2}", min, medium, max);
            Console.WriteLine("*********************************************************************");
        }

        //This will print number in circular-shift-right [A, B, C, D] = > [B, C, D, A]
        static void swap(int num1, int num2, int num3, int num4)
        {
            int temp;
            Console.WriteLine("Before swapping the numbers, num1 is {0}, num2 is {1}, num3 is {2} and num4 is {3}", num1, num2, num3, num4);
            temp = num1;
            num1 = num2;
            num2 = num3;
            num3 = num4;
            num4 = temp;
            Console.WriteLine("After swapping the numbers, num1 is {0}, num2 is {1}, num3 is {2} and num4 is {3}", num1, num2, num3, num4);
            Console.WriteLine("*********************************************************************");
        }

        public static int smallestNumber(int num1, int num2, int num3)
        {
            int min = num1;
            if (num2 < min)
                min = num2;
            if (num3 < min)
                min = num3;
            return min;
        }

        public static int largestNumber(int num1, int num2, int num3)
        {
            int max = num1;
            if (num2 > max)
                max = num2;
            if (num3 > max)
                max = num3;
            return max;
        }

        public static int mediumNumber(int a, int b, int c)
        {
            if ((a < b && b < c) || (c < b && b < a))
                return b;
            else if ((b < a && a < c) || (c < a && a < b))
                return a;
            else
                return c;
        }
    }
}

Below is the output screenshot