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Return the longest word of a string. If more than one word, put into an array.
Split an array into chunked arrays of a specific length
ex. chunkArray([1, 2, 3, 4, 5, 6, 7], 3) returns [[1, 2, 3], [4, 5, 6], [7]]
ex. chunkArray([1, 2, 3, 4, 5, 6, 7], 2) returns [[1, 2], [3, 4], [5, 6], [7]]
Take an array of arrays and flatten to a single array
ex. flattenArray([[1, 2], [3, 4], [5, 6], [7]]) returns [1, 2, 3, 4, 5, 6, 7]
Return true if anagram and false if not
ex. isAnagram('elbow', 'below') returns true
Change every letter of the string to the one that fallows it and capitalize the vowels . Z should turn to A
ex. letterChanges('hello there') returns 'Ifmmp UIfsf'