Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
First solution in Clear category for The Most Wanted Letter by skar123
from operator import methodcaller
from collections import Counter
def checkio(text: str) -> str:
letters = filter(methodcaller('isalpha'), text.lower())
return min(Counter(letters).most_common(), key=lambda t: (-t[1], t[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 3, 2019