Given a binary tree, find the length(number of nodes) of the longest consecutive sequence(Monotonic and adjacent node values differ by 1) path.The pat ...

Given a binary tree, find the length of the longest consecutive sequence path. The path refers to any sequence of nodes from some starting node to any ...

Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves, and ri ...

Given a binary tree with n nodes, your task is to check if it’s possible to partition the tree to two trees which have the equal sum of values after r ...

Given a binary tree, flatten it to a linked list in-place. For example, given the following tree: 12345 1 / \ 2 5 / \ \3 4 6 The flatte ...

Given a tree, rearrange the tree in in-order so that the leftmost node in the tree is now the root of the tree, and every node has no left child and o ...

Given a complete binary tree, count the number of nodes. NoteDefinition of a complete binary tree from Wikipedia:In a complete binary tree every level ...

In a binary tree, the root node is at depth 0, and children of each depth k node are at depth k+1. Two nodes of a binary tree are cousins if they have ...

We define the Perfect Number is a positive integer that is equal to the sum of all its positive divisors except itself. Now, given an integer n, write ...

Given a positive integer num, write a function which returns True if num is a perfect square else False. NoteDo not use any built-in library function ...