Given an array of positive, non-zero, integers, return a cell array of strings the same size as the input, where each element in the output contains:

• 'fizz' if the corresponding input is a multiple of 3
• 'buzz' if the corresponding input is a multiple of 5
• 'fizzbuzz' if the corresponding input is a multiple of 15
• the string representation of the number otherwise.

Example:

   >> out = fizzbuzz(1)
   out = 
       '1'

   >> out = fizzbuzz(1:5)
   out = 
       '1'    '2'    'fizz'    '4'    'buzz'

   >> out = fizzbuzz([3 5 15])
   out = 
       'fizz'    'buzz'    'fizzbuzz'