# 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 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…

# LeetCode 34. Search for a Range

Description https://leetcode.com/problems/search-for-a-range/description/ Given an array of integers sorted in ascending order, find the starting and ending position of a given…

# LeetCode 1. Two Sum

Description https://leetcode.com/problems/two-sum/ Given an array of integers, return indices of the two numbers such that they add up to a…