How To Reverse String Using StringBuilder

StringReverseUsingStringBuilder.zip

Introduction

In this blog, I am going to explain the program for string reverse using StringBuilder.

Software Requirements:

Program

using System;
using System.Text;
namespace StringReverseUsingStringBuilder {
public static class StringReverse {
// Reverse ExtentionMethod
public static string Reverse(this string str) {
// calling StringReverseUsingStringBuilder
return Program.StringReverseUsingStringBuilder(str);
}
}
class Program {
static void Main() {
Console.WriteLine("(Input is Optional and Default value will be CSharpcorner)");
Console.WriteLine("Enter your data to Reverse otherwise just Hit Enter");
string sampleText = Console.ReadLine();
if (string.IsNullOrEmpty(sampleText))
sampleText = "https://www.c-sharpcorner.com";
Console.WriteLine("=======================================================");
Console.WriteLine($ "Original Text : {sampleText}");
Console.WriteLine("=======================================================");
var reverseText = StringReverseUsingStringBuilder(sampleText);
Console.WriteLine($ "Reversed Text (Using Normal Method) : {reverseText}");
Console.WriteLine("======================================================");
reverseText = sampleText.Reverse();
Console.WriteLine($ "Reversed Text (Using Extension Method) : {reverseText}");
}
public static string StringReverseUsingStringBuilder(string str) {
StringBuilder sb = new StringBuilder(str);
for (int i = 0; i < sb.Length / 2; i++) {
var temp = sb[sb.Length - i - 1];
sb[sb.Length - i - 1] = sb[i];
sb[i] = temp;
}
return sb.ToString();
}
}
}