Dictionary

// 1. Write a function that evaluates if that word is compund or not (it should recieve an string as input).
// 2. Compound words examples: hotdog, goodbye, newspaper.
// 3. Not compound words: catdog, hello, news

const wordDictionary = [
    'good',
    'bye',
    'news',
    'paper',
    'hot',
    'dog',
    'goodbye',
    'hotdog',
    'newspaper',
    'new',
    'cat'
];
// write your function here.

const wordExitsInDictionary = (wordsDictionary, word) => wordsDictionary[word] ? true : false;

const mapWordDictionary = dictionary => {
  return dictionary.reduce((acc, cur) => {
    acc[cur] = true;
    return acc;
  }, {});
};

function isCompoundWord(word, wordDictionary) {
  const wordDictionaryMap = mapWordDictionary(wordDictionary);

  let fullWord = '';
  let currentWord = '';
  for(let i=0; i < word.length; i++) {
    currentWord += word[i];
    if (wordExitsInDictionary(wordDictionaryMap, currentWord)) {
      const letterReamining = word.substring(i+1, word.length);
      if (wordExitsInDictionary(wordDictionaryMap, letterReamining)) {
        fullWord = currentWord + letterReamining;
        break;
      }
    }
  }
 
  return wordExitsInDictionary(wordDictionaryMap, fullWord);
}

console.log(isCompoundWord('dog', wordDictionary));