How to Reverse a Number and 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#. 

1. using System;  
2.   
3. namespace ReverseNo  
4. {  
5.     class Program  
6.     {  
7.         static void Main(string[] args)  
8.         {  
9.             Console.WriteLine("Enter a No. to reverse");  
10.             int Number = int.Parse(Console.ReadLine());  
11.             int Reverse = 0;  
12.             while(Number>0)  
13.             {  
14.                 int remainder = Number % 10;  
15.                 Reverse = (Reverse * 10) + remainder;  
16.                 Number = Number / 10;  
17.             }  
18.             Console.WriteLine("Reverse No. is {0}",Reverse);  
19.             Console.ReadLine();  
20.         }  
21.     }  
22. }  

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Reverse a String in C#

 

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

1. using System;  
2.   
3. namespace reverseString  
4. {  
5.     class Program  
6.     {  
7.         static void Main(string[] args)  
8.         {  
9.             string str = "", reverse = "";  
10.             int Length = 0;  
11.             Console.WriteLine("Enter a Word");  
12.             //Getting String(word) from Console  
13.             str = Console.ReadLine();  
14.             //Calculate length of string str  
15.             Length = str.Length - 1;  
16.             while(Length>=0)  
17.             {  
18.                 reverse = reverse + str[Length];  
19.                 Length--;  
20.             }  
21.             //Displaying the reverse word  
22.             Console.WriteLine("Reverse word is {0}",reverse);  
23.             Console.ReadLine();  
24.         }  
25.     }  
26. }  

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