Regex exercise interview question

gistfile1.txt

/*

write a function that takes two inputs:

 vocabulary - array of strings (words)
 sentence - string

and returns:
 true - if the sentence can be split in the words given; words can be repeated, words can have any order; you can use only subset of words
 false - if the sentence cannot be split in the words

Both sentence and words contain only lower-letter characters [a-z].
Note: the sentence does not need to be semantically correct.

example:
words = [“i”, “am”, “here”]
sentence: 
  “iamhere” -> true
  “amami” -> true
  “iambla” -> false
*/

const vocabulary = ["i", "am", "here"];

const sentence = "iamhere";
const sentence2 = "amami";
const sentence3 = "iambla";

const solve_riddle = (vocabulary, sentence) => {
  const regex = new RegExp(`(${vocabulary.join("|")})`, "g");
  const test = sentence.match(regex).join("");
  return test.length == sentence.length;
};

const result1 = solve_riddle(vocabulary, sentence);
const result2 = solve_riddle(vocabulary, sentence2);
const result3 = solve_riddle(vocabulary, sentence3);

console.log(result1, result2, result3);