WordGenerator

gistfile1.cpp

#pragma once
#include <string>
#include <vector>
class WordGenerator
{
public:
    virtual std::string generateNext();
    std::string getCurrent();
    WordGenerator(char* range)
    {
        createAlphabet(range);
        firstLetter=*range;
        lastLetter=*(alphabet.rbegin());
        currentWord.push_back(firstLetter);
    }
    WordGenerator(char* range,std::string firstWord)
    {
        createAlphabet(range);
        firstLetter=*range;
        lastLetter=*(alphabet.rbegin());
        currentWord = firstWord;
    }

    WordGenerator(void)
    {
        createAlphabet("a-zA-Z");
        firstLetter = 'a';
        lastLetter =*(alphabet.rbegin());;
        currentWord = "a";
    }
protected:
    virtual void insertFrontCharacter(std::string& word);
    std::string currentWord; 
private:     
    std::vector<char> alphabet;
    char firstLetter;
    char lastLetter;
    void createAlphabet(char* range);
    char getNextLetterAlphabet(char after);
    void WordGenerator::changeWord(std::string& word);
};