--description--

Given a string of words, return a new string where each word is replaced by its length.

• Words in the given string will be separated by a single space
• Keep the spaces in the returned string.

For example, given "hello world", return "5 5".

--hints--

convertWords("hello world") should return "5 5".

assert.equal(convertWords("hello world"), "5 5");

convertWords("Thanks and happy coding") should return "6 3 5 6".

assert.equal(convertWords("Thanks and happy coding"), "6 3 5 6");

convertWords("The quick brown fox jumps over the lazy dog") should return "3 5 5 3 5 4 3 4 3".

assert.equal(convertWords("The quick brown fox jumps over the lazy dog"), "3 5 5 3 5 4 3 4 3");

convertWords("Lorem ipsum dolor sit amet consectetur adipiscing elit donec ut ligula vehicula iaculis orci vel semper nisl") should return "5 5 5 3 4 11 10 4 5 2 6 8 7 4 3 6 4".

assert.equal(convertWords("Lorem ipsum dolor sit amet consectetur adipiscing elit donec ut ligula vehicula iaculis orci vel semper nisl"), "5 5 5 3 4 11 10 4 5 2 6 8 7 4 3 6 4");

--seed--

--seed-contents--

function convertWords(str) {

  return str;
}

--solutions--

function convertWords(str) {
  return str
    .split(" ")
    .map(word => word.length)
    .join(" ");
}