problem0226

README

226. Invert Binary Tree

题目

Invert a binary tree.

     4
   /   \
  2     7
 / \   / \
1   3 6   9

to

     4
   /   \
  7     2
 / \   / \
9   6 3   1

解题思路

见程序注释

Documentation

Index

• type TreeNode

Types

type TreeNode

type TreeNode = kit.TreeNode