Delete all occurrences of a given key in a doubly linked list

Given doubly linked list are containing N nodes of integer values. Here some nodes are contains similar data element. Our goal is to delete each nodes of given linked list which are equal to given key X. Suppose given linked list are containing following nodes data (9,2,3,9,5,6,7,9).

Before delete 9 node occurrences in doubly linked list after delete 9 node occurrences in doubly linked list

Here given code implementation process.




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