Reverse a Number and String in C#

In this blog, we will learn how to reverse a number in C#. Code also shows how to reverse a string in C#.

The first example shows how to reverse a number in C#. The second example shows how to reverse a string in C#.

 

Reverse a Number in C#

 

Here is the code sample that shows you to reverse a number in C#. 

using System;

namespace ReverseNo
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter a No. to reverse");
            int Number = int.Parse(Console.ReadLine());
            int Reverse = 0;
            while(Number>0)
            {
                int remainder = Number % 10;
                Reverse = (Reverse * 10) + remainder;
                Number = Number / 10;
            }
            Console.WriteLine("Reverse No. is {0}",Reverse);
            Console.ReadLine();
        }
    }
}

Preview

 

 

Reverse a String in C#

 

The following code sample shows how to reverse a string in C#.

using System;

namespace reverseString
{
    class Program
    {
        static void Main(string[] args)
        {
            string str = "", reverse = "";
            int Length = 0;
            Console.WriteLine("Enter a Word");
            //Getting String(word) from Console
            str = Console.ReadLine();
            //Calculate length of string str
            Length = str.Length - 1;
            while(Length>=0)
            {
                reverse = reverse + str[Length];
                Length--;
            }
            //Displaying the reverse word
            Console.WriteLine("Reverse word is {0}",reverse);
            Console.ReadLine();
        }
    }
}

Preview

 

 

Hope you like it. Thanks.