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First solution in Clear category for Common Words by fs0000016
def checkio(first, second):
list_f = first.split(",")
list_s = second.split(",")
list_answer = list(filter(lambda x: x in list_s,list_f))
return ",".join(sorted(list_answer))
#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"
Sept. 6, 2019
