Tag: a-tree

All the articles with the tag "a-tree".

• LeetCode 124 Binary Tree Maximum Path Sum

  28 May, 2026

  Solutions for LeetCode 124, hard, tags: tree, depth-first search, dynamic programming, binary tree.

• LeetCode 105 Construct Binary Tree from Preorder and Inorder Traversal

  19 May, 2026

  Solutions for LeetCode 105, medium, tags: array, hash table, divide and conquer, tree, binary tree.

• LeetCode 2583 Kth Largest Sum in a Binary Tree

  18 May, 2026

  Solutions for LeetCode 2583, medium, tags: tree, breadth-first search, sorting, binary tree.

• LeetCode 2415 Reverse Odd Levels of Binary Tree

  Updated: 1 May, 2025

  Solutions for LeetCode 239, hard, tags: array, queue, sliding window, heap, monotonic queue.

• Rust Option, Rc, and RefCell Explained - LeetCode Tree Node and LinkedList Node

  11 Dec, 2024

  Explanation for rust data structure for tree node and linked list node. What is Rc and RefCell? Why Option<Rc<RefCell>>> three wrappers? How to avoid circular reference?

• LeetCode 1650 LintCode 474 Lowest Common Ancestor of a Binary Tree III

  9 Dec, 2024

  Solutions for LeetCode 1650 LintCode 474, medium, tags: binary tree, hash table, two pointers; companies: microsoft.