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Exercise 6

Write a function that searches an array of strings for every element that matches the regular expression given by its argument. The function should return all matching elements in an array.

Example

let words = [
  'laboratory',
  'experiment',
  'flab',
  'Pans Labyrinth',
  'elaborate',
  'polar bear',
];

console.log(allMatches(words, /lab/)); // => ['laboratory', 'flab', 'elaborate']

Solution

function allMatches(words, pattern) {
  let matches = [];
  for (let index = 0; index < words.length; index += 1) {
    if (pattern.test(words[index])) {
      matches.push(words[index]);
    }
  }

  return matches;
}

function allMatches(words, pattern) {
  return words.filter((word) => pattern.test(word));
}

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