http://chanduthedev.blogspot.in/2012/10/implementing-doubly-linked-list-using-single-pointer.htmlhttp://chanduthedev.blogspot.in/2012/10/double-linked-list-using-single-pointer.htmlkodeknight incomplete Doubly Linked List DLL pointers See alsoFor a Given node of a binary tree, print the K distance nodes.Find the distance between 2 nodes in Binary TreeFind the distance between 2 nodes in Binary TreeProgram to count leaf nodes in a binary treeFriend Circle - Hackerrank