Question: def normalize(input_string): result = [] for letter in input_string: if letter.isalpha(): result.append(letter.lower()) return result In Python, create the following function, def find_missing_letters(sentence) : the input

def normalize(input_string): result = [] for letter in input_string: if letter.isalpha(): result.append(letter.lower()) return result

In Python, create the following function,

def find_missing_letters(sentence):

  • the input sentence is an array/list (created from normalize() function above)

  • returns a sorted array of letters that are NOT in the sentence

  • use the built in Python type set to solve

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