Even after odd linked list doubt

#1

i questions like this can we just swap the data of two nodes or we need to swap the nodes ??

and this is a doubly-linked list question na ??

#2

yes it is doubly linked list question
but swapping will not give correct output
because after swapping order of even and odd values will change which will lead to wrong ans

for input
2 4 3

after swapping your output will be
3 4 2
but correct output is
3 2 4

#3

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