소프트웨어에 대한 모든 것

226. Invert Binary Tree 문제) Given the root of a binary tree, invert the tree, and return its root. 솔루션1) # Definition for a binary tree node. # class TreeNode: # def __init__(self, val=0, left=None, right=None): # self.val = val # self.left = left # self.right = right class Solution: def invertTree(self, root: Optional[TreeNode]) -> Optional[TreeNode]: self.invert(root) return root def invert(se..