Binary Tree Level Order Traversal - 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).

Binary Tree Level Order Traversal II - Given the root of a binary tree, return the bottom-up level order traversal of its nodes' values. (i.e., from left to right, level by level from leaf to root).

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], [9,20], [15,7]] …

Binary Tree Zigzag Level Order Traversal - Given the root of a binary tree, return the zigzag level order traversal of its nodes' values. (i.e., from left to right, then right to left for the next level and alternate …

Binary Tree Zigzag Level Order Traversal - Given the root of a binary tree, return the zigzag level order traversal of its nodes' values. (i.e., from left to right, then right to left for the next level and alternate …

Given an n-ary tree, return the level order traversal of its nodes' values. Nary-Tree input serialization is represented in their level order traversal, each group of children is separated by the null value (See …

The vertical order traversal of a binary tree is a list of top-to-bottom orderings for each column index starting from the leftmost column and ending on the rightmost column.

Aug 17, 2024 · LeetCode problems often involve complex data structures like Linked Lists and Binary Trees, which are pre-defined to save you time. The table below shows how to format and input these …

Feb 2, 2025 · Given an array nums, return true if the array was originally sorted in non-decreasing order, then rotated some number of positions (including zero). Otherwise, return false.