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First solution in Clear category for The Most Wanted Letter by e.volgon
# migrated from python 2.7
def checkio(text):
# create a dict with letter only
# key = letter, value = how many letter in text
letter_dict = {}
lower_text = text.lower()
for letter in lower_text:
if letter.isalpha():
letter_dict[letter]= lower_text.count(letter)
# in resul tuple with result of sorted key&value
# [(key1,value1)...(keyN,valueN)]
result = sorted(list(letter_dict.items()), key = lambda k_v: (-k_v[1],k_v[0]))
return result[0][0]
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert checkio("Hello World!") == "l", "Hello test"
assert checkio("How do you do?") == "o", "O is most wanted"
assert checkio("One") == "e", "All letter only once."
assert checkio("Oops!") == "o", "Don't forget about lower case."
assert checkio("AAaooo!!!!") == "a", "Only letters."
assert checkio("abe") == "a", "The First."
print("Start the long test")
assert checkio("a" * 9000 + "b" * 1000) == "a", "Long."
print("The local tests are done.")
July 1, 2015
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