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# Binary Tree

### 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...