## Print nodes of a given binary tree in vertical order

Given a binary tree, print its nodes in vertical order. Assume that the left and right child of a node makes 45 degree angle with the parent.

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Given a binary tree, print its nodes in vertical order. Assume that the left and right child of a node makes 45 degree angle with the parent.

Given a binary tree, write an efficient algorithm to link nodes at the same level in the form of a linked list like structure.

Given a multilevel linked list, convert it into a singly linked list in such a way that all nodes of first level appears first, followed by all nodes of second level, and so on. The multilevel linked list is similar to the simple linked list except that it has one extra field which points to …

Given a linked list, rearrange it by separating odd nodes from even ones. All even nodes should come before all odd nodes in the output list and the relative order of even and odd nodes should be maintained.

Given two sorted linked lists, merge them without using extra space and without modifying links of the first list. The solution should preserve the sorted order of elements in both lists.

Given a sorted Doubly Linked List, in-place convert it into a height-balanced Binary Search Tree (BST). The difference between the height of the left and right subtree for every node of a height-balanced BST is never greater than 1.

We know that LinkedList class in Java is a doubly-linked list implementation of the List interface. This post provides an overview common techniques to manually implement a linked list in Java programming language.

In this post, we will discuss about XOR linked list which is used to reduce memory requirements of a doubly linked lists using bitwise XOR operator.

Given an unsorted linked list, write a function which deletes any duplicate nodes from the list by traversing the list only once.

Given an linked list of integers, rearrange it such that every second node of the linked list is greater than its left and right nodes. In other words, rearrange linked list node in alternating high-low.

In this post, we will discuss the differences between ArrayList and LinkedList in Java.

Given a linked list containing 0’s, 1’s and 2’s, sort linked list by doing single traversal of it.