[Leetcode] [JavaScript] Invert Binary Tree

Invert Binary Tree

Invert a binary tree.

     4   /     2     7/\   /1   3 6   9

To

     4   /     7     2/\   /9   6 3   1

Trivia:
This problem is inspired by this original tweets by Max Howell:

google:90% of our engineers with the software you wrote (Homebrew), but can ' t invert a binary tree on a Whitebo ard so fuck off.

https://leetcode.com/problems/invert-binary-tree/

Making good products does not mean good code, and vice versa.

1 /**2 * Definition for a binary tree node.3 * Function TreeNode (val) {4 * This.val = val;5 * This.left = This.right = null;6  * }7  */8 /**9 * @param {TreeNode} rootTen * @return {TreeNode} One  */ A varInverttree =function(root) { - swap (root); -     returnRoot; the  -     functionSwap (node) { -         if(Node!==NULL){ -             varTMP =Node.left; +Node.left =Node.right; -Node.right =tmp; + swap (node.left); A swap (node.right); at         } -     } -};

[Leetcode] [JavaScript] Invert Binary Tree