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