Package g0201_0300.s0297_serialize_and_deserialize_binary_tree

Class Codec

java.lang.Object
g0201_0300.s0297_serialize_and_deserialize_binary_tree.Codec
public class Codec extends java.lang.Object
297 - Serialize and Deserialize Binary Tree.

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.

Clarification: The input/output format is the same as how LeetCode serializes a binary tree. You do not necessarily need to follow this format, so please be creative and come up with different approaches yourself.

Example 1:

Input: root = [1,2,3,null,null,4,5]

Output: [1,2,3,null,null,4,5]

Example 2:

Input: root = []

Output: []

Example 3:

Input: root = [1]

Output: [1]

Example 4:

Input: root = [1,2]

Output: [1,2]

Constraints:

  • The number of nodes in the tree is in the range [0, 104].
  • -1000 <= Node.val <= 1000

  • Constructor Summary

    Constructors
    Constructor
    Description
    Codec()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    TreeNode
    deserialize(java.lang.String data)
     
    java.lang.String
    serialize(TreeNode root)
     
    void
    serialize(TreeNode root, java.lang.StringBuilder sb)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Codec

      public Codec()

  • Method Details

    • serialize

      public java.lang.String serialize(TreeNode root)

    • serialize

      public void serialize(TreeNode root, java.lang.StringBuilder sb)

    • deserialize

      public TreeNode deserialize(java.lang.String data)