0297-serialize-and-deserialize-binary-tree.js

/**
 * 297. Serialize and Deserialize Binary Tree
 * https://leetcode.com/problems/serialize-and-deserialize-binary-tree/
 * Difficulty: Hard
 *
 * Serialization is the process of converting a data structure or object into a sequence of bits so
 * that it can be stored in a file or memory buffer, or transmitted across a network connection link
 * to be reconstructed later in the same or another computer environment.
 *
 * Design an algorithm to serialize and deserialize a binary tree. There is no restriction on how
 * your serialization/deserialization algorithm should work. You just need to ensure that a binary
 * tree can be serialized to a string and this string can be deserialized to the original tree
 * structure.
 */

/**
 * Definition for a binary tree node.
 * function TreeNode(val) {
 *     this.val = val;
 *     this.left = this.right = null;
 * }
 */

/**
 * Encodes a tree to a single string.
 *
 * @param {TreeNode} root
 * @return {string}
 */
var serialize = function(root) {
  return JSON.stringify(root);
};

/**
 * Decodes your encoded data to tree.
 *
 * @param {string} data
 * @return {TreeNode}
 */
var deserialize = function(data) {
  return JSON.parse(data);
};