5kyu_WhereMyAnagramsAt.js

// 5kyu - Where my anagrams at?

// Description:

// What is an anagram? Well, two words are anagrams of each other if they both contain 
// the same letters. For example:

// 'abba' & 'baab' == true

// 'abba' & 'bbaa' == true

// 'abba' & 'abbba' == false
// Write a function that will find all the anagrams of a word from a list. You will be 
// given two inputs a word and an array with words. You should return an array of all 
// the anagrams or an empty array if there are none. For example:

// anagrams('abba', ['aabb', 'abcd', 'bbaa', 'dada']) => ['aabb', 'bbaa']

// anagrams('racer', ['crazer', 'carer', 'racar', 'caers', 'racer']) => ['carer', 'racer']

// anagrams('laser', ['lazing', 'lazy',  'lacer']) => []

function anagrams(word, words) {
  function isAnagram(str) {
    return str.split("").sort().join("") === word.split("").sort().join("");
  }
  return words.filter(a => isAnagram(a));
}