Method 1: Using ToCharArray() and Array.Reverse()

string str = “hello”;
char[] charArray = str.ToCharArray();
Array.Reverse(charArray);
string reversed = new string(charArray);
Console.WriteLine(reversed); // Output: “olleh”

Method 2: Using LINQ
using System;
using System.Linq;

string str = “world”;
string reversed = new string(str.Reverse().ToArray());
Console.WriteLine(reversed); // Output: “dlrow”