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…
Category: Binary Tree
LeetCode 100. Same Tree
Description https://leetcode.com/problems/same-tree/ Given the roots of two binary trees p and q, write a function to check if they are the same or…
LeetCode 144. Binary Tree Preorder Traversal
Description https://leetcode.com/problems/binary-tree-preorder-traversal/description/ Given a binary tree, return the preorder traversal of its nodes’ values. For example: Given binary tree {1,#,2,3}, 1 \ 2…