Words and regex

Questions 1 to 5 of 8

1. 1. Using reverse_words_with_list from the lesson, what does this print? ``cpp std::cout << "[" << reverse_words_with_list(" a b ") << "]\n"; ``

   [a b][b a][b a][ b a ]
2. 2. Using reverse_words_in_place from the lesson, what does this print? ``cpp std::cout << "[" << reverse_words_in_place(" one two ") << "]\n"; ``

   [one two][owt eno][eno owt][two one]
3. 3. What does this print? ``cpp std::regex digits(R"(\d+)"); std::string text = "abc123def45"; std::smatch found; std::regex_search(text, found, digits); std::cout << found.position() << " " << found.str(); ``

   3 123459 453 1230 abc123
4. 4. In the in-place method, after removing extra spaces and reversing the whole string, the last step reverses each ___ again so its spelling is normal. Type one word.

   Type your answer.

5. 5. Which standard header must be included to use std::regex? Type the header name without the angle brackets.

   Type your answer.