keshavMM004/InterviewQuest

LINKEDIN interview question

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#6 opened on Oct 7, 2024

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Description

Serialization is the process of converting a data structure or object into a sequence of bits for storage or transmission, allowing for reconstruction later.

Design an algorithm to serialize and deserialize a binary tree. The goal is to convert a binary tree into a string and then reconstruct the original tree from that string.

Note: While the input/output format should resemble how LeetCode serializes a binary tree, you are encouraged to explore different approaches. leetcode

Contributor guide

Research direction
Design a serialization algorithm using preorder traversal. Use a delimiter (e.g., comma) to separate node values, and a special marker (e.g., 'null') for null nodes. For deserialization, use a queue to rebuild the tree recursively. Test with simple and complex binary trees.
Tech stack
java
Domain
backend
Issue type
Research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Java
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75