Introduction

In this blog, I am going to explain the program for string reverse using only For Loop.
Software Requirements
  • C# 3.0 or higher,
  • Visual Studio or Notepad
Program
  1. using System;

  3. namespace StringReverseUingForLoop {
  4. public static class StringReverse {
  5. // Reverse ExtentionMethod
  6. public static string Reverse(this string str) {
  7. // calling StringReverseUingForLoop
  8. return Program.StringReverseUingForLoop(str);
  9. }
  10. }
  11. class Program {
  12. static void Main() {
  13. Console.WriteLine("(Input is Optional and Default value will be CSharpcorner)");
  14. Console.WriteLine("Enter your data to Reverse otherwise just Hit Enter");
  15. string sampleText = Console.ReadLine();
  16. if (string.IsNullOrEmpty(sampleText))
  17. sampleText = "https://www.c-sharpcorner.com";
  18. Console.WriteLine("=======================================================");
  19. Console.WriteLine($"Original Text : {sampleText}");
  20. Console.WriteLine("=======================================================");
  21. var reverseText = StringReverseUingForLoop(sampleText);
  22. Console.WriteLine($"Reversed Text (Using Normal Method) : {reverseText}");
  23. Console.WriteLine("======================================================");
  24. reverseText = sampleText.Reverse();
  25. Console.WriteLine($"Reversed Text (Using Extension Method) : {reverseText}");
  26. }
  27. public static string StringReverseUingForLoop(string str) {
  28. var reversedStr = "";
  29. for(int i = str.Length - 1; i >= 0; i--)
  30. reversedStr += str[i];
  31. return reversedStr;
  32. }
  33. }
  34. }
Now run the code.
If User does not enter anything, then the default value will be "https://www.c-sharpcorner.com." The following example is without input.
If User enters "Microsoft Technologies," it should look like the following:
Thank you so much for reading my blog.