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First solution in Clear category for Common Words by dis.xcom
def checkio(first, second):
words = list(set(first.split(",")).intersection(set(second.split(","))))
if words:
return ",".join(sorted(words))
return ""
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio("hello,world", "hello,earth") == "hello", "Hello"
assert checkio("one,two,three", "four,five,six") == "", "Too different"
assert checkio("one,two,three", "four,five,one,two,six,three") == "one,three,two", "1 2 3"
Jan. 2, 2020
