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Ez solution in Creative category for The Most Wanted Letter by aUxbl4
import collections, re
def checkio (x):
y = collections.Counter(re.sub(r'[^a-z]' , "", x.lower()))
z = sorted(y.items(), key=lambda item: (-item[1], item[0]))
return (z[0][0])
if __name__ == '__main__':
print("Example:")
print(checkio("Hello World!"))
#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.")
April 26, 2019
