Function extract_words

Examples/Modules/Chapter 08/Ex8_17.cpp:37–49

}

void extract_words(Words& words, const std::string& text, const std::string& separators)
{
  size_t start {text.find_first_not_of(separators)}; // Start index of first word

  while (start != std::string::npos)
  {
    size_t end{ text.find_first_of(separators, start + 1) }; // Find end of a word
    if (end == std::string::npos)                    // Found a separator?
      end = text.length();                           // Yes, so set to end of text
    words.push_back(std::make_shared<std::string>(text.substr(start, end - start)));
    start = text.find_first_not_of(separators, end + 1); // Find start next word
  }
}

void swap(Words& words, size_t first, size_t second)
{