Top View of a Tree
Given a binary tree root, return the top view of the tree, sorted left-to-right.
Posts with tag 'bfs'
Sorting Mail
You are given a list of strings mailboxes. Each mailbox is a list of strings, where each string is either "junk", "personal", "work". Go through each mailbox...
Level Order Traversal
Given a binary tree root return a level order traversal of the node values.
Level Order Binary Tree to Linked List
Given a binary tree root, convert it to a singly linked list using level order traversal.
Level Order Alternating
Given a binary tree root, return values of the nodes in each level, alternating from going left-to-right and right-to-left.
Leaves in Same Level
Given a binary tree root, return whether all leaves are at the same level.