Given a Binary Search Tree (BST), find the lowest common ancestor (LCA) of two given nodes. The lowest common ancestor is the deepest node that is an ancestor of both nodes. An ancestor of a node is a node itself or any node in its path up to the root.
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes. The lowest common ancestor is defined as the lowest node that is an ancestor of both nodes p and q. A node can be a descendant of itself.
You are given a nested list of integers nestedList, where each element can either be an integer or a sublist containing integers or other sublists. Implement an iterator to flatten this nested list.
You are given an n x n binary grid of 0’s and 1’s. Your task is to represent this grid with a Quad-Tree. A Quad-Tree is a tree structure where each node has four children. Each internal node has two properties: val (True for a grid of 1’s or False for a grid of 0’s) and isLeaf (True if the node is a leaf, False if it has children). If the entire grid has the same value, the node is a leaf. If not, the grid is divided into four sub-grids, and the process is repeated recursively for each sub-grid. Your goal is to return the root of the Quad-Tree that represents the grid.
