# LeetCode 102. Binary Tree Level Order Traversal

Description https://leetcode.com/problems/binary-tree-level-order-traversal/description/ Given a binary tree, return the level order traversal of its nodes’ values. (ie, from left to right, level by…

# LeetCode 111. Minimum Depth of Binary Tree

Description https://leetcode.com/problems/minimum-depth-of-binary-tree/description/ Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the…

# LeetCode 110. Balanced Binary Tree

Description https://leetcode.com/problems/balanced-binary-tree/description/ Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined…

# LeetCode 104. Maximum Depth of Binary Tree

Description https://leetcode.com/problems/maximum-depth-of-binary-tree/description/ Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the…

# LeetCode 101. Symmetric Tree

Description https://leetcode.com/problems/symmetric-tree/description/ Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For…