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First solution in Clear category for Common Words by rybld2
def checkio(first, second):
f, s = first.split(','), second.split(',')
res=[mot for mot in f if mot in s]
return ','.join(sorted(res))
#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. 1, 2021
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