This is a doubly-linked list, as shown above. It does many of the common things we would want a linked list class to be able to do. One innovation I added is the concept of a node cache. That is, the ...

# Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. # If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it ...

Linked List: It is a linear data structure consisting of a sequence of elements called nodes, where each node contains data and a reference (or pointer) to the next node in the sequence.