| f | import itertools | f | import itertools |
| | | |
| def seesaw(sequence): | | def seesaw(sequence): |
| seq1, seq2 = itertools.tee(sequence) | | seq1, seq2 = itertools.tee(sequence) |
| t | chet = (x for x in seq1 if x % 2 == 0) | t | evens = (x for x in seq1 if x % 2 == 0) |
| nechet = (x for x in seq2 if x % 2 != 0) | | odds = (x for x in seq2 if x % 2 != 0) |
| for c, n in itertools.zip_longest(chet, nechet): | | for e, o in itertools.zip_longest(evens, odds): |
| if c is not None: | | if e is not None: |
| yield c | | yield e |
| if n is not None: | | if o is not None: |
| yield n | | yield o |