Invert Binary Tree - LeetCode
Given the root of a binary tree, invert the tree, and return its root. Example 1: Input: root = [4,2,7,1,3,6,9] Output: [4,7,2,9,6,3,1] Example 2: Input: root = [2,1,3] Output: [2,3,1] Example …
Reverse Odd Levels of Binary Tree - LeetCode
Given the root of a perfect binary tree, reverse the node values at each odd level of the tree. For example, suppose the node values at level 3 are [2,1,3,4,7,11,29,18], then it should become …
Technical Questions – Help Center - LeetCode
How do I use the database visualizer? Voice/Video Help Article Where do I find all of my submitted code? Am I allowed to print something to stdout? What is the difference between …
How to create test cases on LeetCode? - Help Center
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 …
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LeetCode Interview
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Closest Prime Numbers in Range - LeetCode
Can you solve this real interview question? Closest Prime Numbers in Range - Given two positive integers left and right, find the two integers num1 and num2 such that: * left <= num1 < num2 …