637. Average of Levels in Binary Tree
Given the root of a binary tree, return the average value of the nodes on each level in the form of an array. Answers within 10^-5 of the actual answer will be accepted.
515. Find Largest Value in Each Tree Row
Given the root of a binary tree, return an array of the largest value in each row of the tree (0-indexed) .
662. Maximum Width of Binary Tree
Given the root of a binary tree, return the maximum width of the given tree.
2049. Count Nodes With the Highest Score
There is a binary tree rooted at 0 consisting of n nodes. The nodes are labeled from 0 to n - 1. You are given a 0-indexed integer array parents representing the tree, where parents[i] is the parent of node i. Since node 0 is the root, parents[0] == -1.
1080. Insufficient Nodes in Root to Leaf Paths
Given the root of a binary tree and an integer limit, delete all insufficient nodes in the tree simultaneously, and return the root of the resulting binary tree.
979. Distribute Coins in Binary Tree
You are given the root of a binary tree with n nodes where each node in the tree has node.val coins. There are n coins in total throughout the whole tree.