Reverse an Integer Value in C# (Used No Built in Functions)

Today i have attened an IT Services Company interview, where i was been asked to write the code for Reverse an Integer Value in C# with out using any Built In functions.

Here is the code i formulated in my mind. Go through it.

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApp02
{
    class Program
    {
        static void Main(string[] args)
        {

            Console.Write("Enter the Integer to Reverse: ");

            //Reading the Entered Number
            string  strInVal = Console.ReadLine();


            int inVal = Convert.ToInt32(strInVal);

            //Calling Reverse Function
            int outVal = Reverse(inVal);

            Console.WriteLine(String.Format("Revered Interger value is {0}", outVal));

            Console.WriteLine("**** Press Any Key to Exit ");

            Console.Read();


        }


        public static int Reverse(int inVal)
        {
            int result = 0;


            //Ex: 567
            // Loop 1:
            // 567 % 10 = 7
            // (0 * 10) + 7 = 7
            // inVal = 567 /10 = 56
            // Loop 2:
            // 56 % 10 = 6
            // (7 * 10) + 6  = 76
            // 56 / 10 =  5
            // Loop 3: 
            // 5 % 10 = 5
            // (56 * 10) + 5  = 765  -- Achieved out result. 
            // 5 / 10 = 0 // Do while condition ends
            do
            {
              

                result = (result * 10) + (inVal % 10);

                inVal = inVal / 10;
            }
            while (inVal > 0);

            return result;

        }
    }
}

Results
reverse result 1
reverse result 2

Kudos!!! I hope it will defenitly be useful to some body. Unfortunately i was n’t been able to write it out in my paper in interview time, just after returning the paper only i got this idea, but no use, i thought asking paper back and write n give. Anyway’s some day it will be useful for some one.. KOOOOLLL

Other times, you're doing some piece of work and suddenly you get feedback that tells you that you have touched something that is very alive in the cosmos. Share your feedback on this blog, it will help me improve it a lot..