Tag: LeetCode 101: 102. Binary Tree Level Order Traversal

LeetCode Problem: 102. Binary Tree Level Order Traversal https://leetcode.com/problems/binary-tree-level-order-traversal/description/ Problem Description: Given the root of a binary tree, return the level order traversal of its nodes’ values. (i.e., from left to right, level by level). Example 1: Input: root = [3, 9, 20, null, null, 15, 7] Output: [[3], [9,…