Symmetric Tree - LeetCode
Given the root of a binary tree, check whether it is a mirror of itself (i.e., symmetric around its center).. Example 1: Input: root = [1,2,2,3,4,4,3] Output: true Example 2: Input: root = [1,2,2,null,3,null,3] Output: false Constraints: The number of nodes in the tree is in the range [1, 1000].-100 <= Node.val <= 100 . Follow up: Could you solve it both recursively and iteratively?
DA: 91 PA: 7 MOZ Rank: 34