The Problem Given the root of a binary tree, return the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or may not pass through the root. The length

The Problem Given the root of a Binary Search Tree (BST), return the minimum absolute difference between the values of any two different nodes in the tree. Example Input: [1,0,48,null,null,12,49] Output: 1 Solution We opted for a recursive approach to tackle this problem, and

The Problem Given the root of a binary search tree (BST) with duplicates, return all the mode(s) (i.e., the most frequently occurred element) in it. If the tree has more than one mode, return them in any order. Assume a BST is defined as follows: * The left subtree

The Problem Given the root of a binary tree, return the sum of all left leaves. A leaf is a node with no children. A left leaf is a leaf that is the left child of another node. Example: Input: [3,9,20,null,null,15,7] Output: 24 Explanation:

The problem Given the root of a binary tree, return all root-to-leaf paths in any order. A leaf is a node with no children. Example Input: [1,2,3,null,5] Output: ["1->2->5","1->3"] Solution We opted for a recursive

The problem: Given the root of a binary tree, invert the tree, and return its root. Example Input: [1, 2, 3, 4, 5, 6, 7] Output: [1, 3, 2, 7, 6, 5, 4] Solution We opted for a recursive approach to tackle this problem, and upon evaluating our solution on

The problem Given the root of a complete binary tree, return the number of the nodes in the tree. According to Wikipedia, every level, except possibly the last, is completely filled in a complete binary tree, and all nodes in the last level are as far left as possible. It

The problem Given the root of a binary tree, return the postorder traversal of its nodes' values. Example Input: [1,null,2,3] Output: [3,2,1] Understanding the problem Tree traversal is a fundamental technique in computer science, enabling us to explore the nodes of a tree-like data

The problem Given the root of a binary tree, return the preorder traversal of its nodes' values. Example Input: [1,null,2,3] Output: [1,2,3] Understanding the problem Tree traversal is a fundamental concept in computer science, particularly when working with hierarchical data structures like trees. Preorder

The Problem Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center). Example Input: [1,2,2,3,4,4,3] Output: true Solution We opted for a recursive approach to tackle this problem, and upon evaluating our solution

The problem Given the roots of two binary trees p and q, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally identical, and the nodes have the same value. Example Input: p = [1,2,3], q

The Problem Given the root of a binary tree, return the inorder traversal of its nodes' values. Example Input: [1,null,2,3] Output: [1,3,2] Solution We opted for a recursive approach to tackle this problem, and upon evaluating our solution on the LeetCode platform, we achieved