You are given a perfect binary tree where all leaves are on the same level, and every parent has two children. The binary tree has the following defin
You are given two binary trees root1 and root2.Imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped wh
You are given an m x n binary matrix grid. An island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may
An image is represented by an m x n integer grid image where imagei represents the pixel value of the image.You are also given three integers sr, sc,