Question: Write pseudocode for a linked list swap operation that accepts three parameters - a doubly linked list L, and two pointers a and b

 Write pseudocode for a linked list swap operation that accepts three parameters  

Write pseudocode for a linked list swap operation that accepts three parameters - a doubly linked list L, and two pointers a and b that point to Node elements inside the linked list. Change all the relevant previous and next links so that Nodes a and b swap places within the list. You may assume that Node b comes after Node a in the list, and that they are not the same Node. Make sure you cover all relevant special cases.

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