Arrays: Given a string, reverse the string.

Example 1:
Input: "hello"
Output: "olleh"


Example 2:

Input: “ProDeveloperTutorial is a good website”
Output: etisbew doog a si lairotuTrepoleveDorP

Method 1: Using STL function.

Method 2: By using swap function.

Solution in C++

#include<iostream>
#include<string>
#include<set>
#include<vector>

using namespace std;

string reverse_string_method_1(string str)
{
   	return string(str.rbegin(), str.rend());
}

string reverse_string_method_2(string str)
{
  	int i = 0;
  	int j = str.size() - 1;
 	
	while(i < j)
	{
	    swap(str[i++], str[j--]); 
	}
        
  	return str;
}

int main()
{
	string str = "hello";

	cout<<"The string is = "<<str<<endl;
	cout<<"The reverse by using method 1 is = "<<reverse_string_method_1(str)<<endl;

	string str_1 = "ProDeveloperTutorial is a good website";
	cout<<"\nThe string is = "<<str_1<<endl;
	cout<<"The reverse by using method 1 is = "<<reverse_string_method_2(str_1)<<endl;
}

Output:

The string is = hello
The reverse by using method 1 is = olleh

The string is = ProDeveloperTutorial is a good website
The reverse by using method 1 is = etisbew doog a si lairotuTrepoleveDorP