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    Algorithm Books

    An algorithm is a formula for solving a problem, based on conducting a sequence of specified actions. In computer science, an algorithm usually means a...

    Merge Two Binary Trees

    In this article, we learn how to Merge Two Binary Trees with example and two different approaches. First approach is In Java using recursion (By creating...

    Invert Binary Tree

    A binary tree is a tree data structure in which each node has at most two children, which are referred to as the left child and the right...

    Check Same Binary Tree

    Check Same Binary Tree Question: Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if...

    Average of Levels in Binary Tree

    Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array. Example 1: Input: ...

    Convert BST to Greater Tree

    Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the...

    Symmetric Tree

    Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree is symmetric: ...

    Binary Tree Path Sum III

    You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The...

    Binary Tree Path Sum II

    Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum. For example: Given the below binary tree...

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