#include <algorithm>

#include <iostream>

using namespace std;



const char	vowels[] = {'a','e','i','o','u'}; // 'y' is omitted since it is not always considered a vowel

// function object class used for splitting a range of chars into consonants and vowels

class Parter

{	

	public:

		bool operator() (char c) { return (find(&vowels[0], &vowels[strlen(vowels)], c) != &vowels[strlen(vowels)]);	}

}; 



void main()

{

	char text[] = "String processing is easy using the STL";

	int length = strlen(text);



	cout << "Original text: " << text << endl;

	reverse(&text[0], &text[length]);

	cout << "Text reversed: " << text << endl;

	rotate(&text[0], &text[length/2], &text[length]);

	cout << "Rotated about middle: " << text << endl;

	random_shuffle(&text[0], &text[length]);

	cout << "Text randomly reordered: " << text << endl;

	*remove(&text[0],&text[length],' ') = '\0';	// terminate purged string so that spaces arent' included

	length = strlen(text); // find length of new string without spaces

	cout << "Spaces purged from text: " << text << endl;	

	partition(&text[0], &text[length], Parter());

	cout << "Text divided into consonants and vowels: " << text << endl;



	cout << "Ten permutations of the above string: " << endl;

	for (int i = 0; i < 10; i++)

	{	next_permutation(&text[0], &text[length]);

		cout << text << endl;

	}

}