Pairwise swap elements of a given linked list

Assume that given linked list are contain N nodes. And our goal is to swap pairwise elements of this linked list. Note that not swap linked list node value, Modify the node reference values.

Suppose we are inserted the following (1,2,3,4,5,6,7,8) node in a sequence.

Before Pairwise swap elements After Pairwise swap elements

Here given code implementation process.




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