Tag: depth first search algorithm
Given a binary tree root, return the sum of the longest path from the root to a leaf node. If there are two equally long paths, return the larger …
You are given a list blocks where each block contains two integers where start < end. You can join two blocks if the end of one is equal to …
Given a binary tree root, return the sum of all node values whose grandparents have an even value. Constraints 0 ≤ n ≤ 100,000 where n is the number …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a Binary Tree, we can count the number of nodes using either Depth First Search (DFS Algorithm) and Breadth …
Teaching Kids Programming: Videos on Data Structures and Algorithms Given NxN chess board, you are asked to place N queens so that they are not attacking each other horizontally, …