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LeetCode VS regular expressions 101

Compare LeetCode VS regular expressions 101 and see what are their differences

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LeetCode logo LeetCode

Practice and level up your development skills and prepare for technical interviews.

regular expressions 101 logo regular expressions 101

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
  • LeetCode Landing page
    Landing page //
    2022-02-01
  • regular expressions 101 Landing page
    Landing page //
    2023-07-30

LeetCode features and specs

  • Comprehensive Problem Library
    LeetCode offers an extensive collection of problems ranging from easy to extremely difficult, covering a wide range of topics and difficulty levels.
  • Active Community
    LeetCode has a vibrant and active community of users who contribute solutions, discuss problems, and provide insights, which can be very helpful for learning and debugging.
  • Interview Preparation
    Many of the problems on LeetCode are modeled after questions that have been asked in technical interviews, making it a popular choice for job seekers to practice and prepare.
  • Company-specific Questions
    LeetCode provides a list of problems that are frequently asked by specific companies during interviews, which can help users focus their preparation.
  • Detailed Explanations
    Many problems come with detailed explanations and multiple approaches to solving them, helping users understand different methodologies and improve their coding skills.
  • Contest and Challenges
    LeetCode regularly hosts coding contests and challenges, which provide users with opportunities to compete against others and improve their skills under time constraints.

Possible disadvantages of LeetCode

  • Paid Subscription
    While LeetCode offers many resources for free, a premium subscription is required to access some advanced features, company-specific questions, additional test cases, and certain problem solutions.
  • Steep Learning Curve
    For beginners, the wide range of problem difficulties and the complexity of some problems can be intimidating and may require a significant amount of time and effort to get up to speed.
  • Limited Technology Coverage
    LeetCode mainly focuses on algorithm and data structure problems and doesn't cover other technical aspects like system design, databases, or front-end development as comprehensively.
  • Variable Quality of Community Solutions
    While the community is active, the quality of user-contributed solutions and explanations can vary significantly, and some may not follow best practices or be optimal.
  • Platform Performance Issues
    Some users report occasional performance issues such as slow loading times or glitches during peak usage times, which can be frustrating during practice or contests.
  • Overemphasis on Coding
    LeetCode's focus is predominantly on coding problems, which might lead some users to neglect other important skills required for technical interviews, such as communication and problem-solving in real-world scenarios.

regular expressions 101 features and specs

  • Interactive Learning
    Regex101 provides an interactive environment where users can test and learn regular expressions in real-time, making the learning process more engaging and practical.
  • Extensive Documentation
    The site offers extensive documentation and references for different regular expression flavors (PCRE, JavaScript, Python, and Golang), facilitating easy access to syntax and usage examples.
  • Error Highlighting
    Regex101 highlights errors in your regular expressions and provides explanations, which helps users quickly identify and correct mistakes.
  • Quick Reference
    A quick reference guide is available on the platform, which helps users look up common regular expression tokens and their meanings without leaving the page.
  • Saved Workspaces
    Users can save their regular expressions and test cases in workspaces, making it convenient to revisit and continue working on them at a later time.
  • Community Support
    The platform has community features wherein users can share their regular expressions and get feedback or suggestions from others.

Possible disadvantages of regular expressions 101

  • Limited to Browser
    Regex101 is a web-based tool, and its usage is restricted to browsers with internet access, limiting its offline availability and performance in a development environment.
  • User Interface Complexity
    For beginners, the user interface can be somewhat overwhelming due to the numerous options and features available, leading to a steeper learning curve.
  • Performance Limitations
    While sufficient for most use cases, Regex101 may struggle with very large datasets or extremely complex regular expressions, causing performance issues.
  • Dependency on External Product
    Relying on an external service means users are dependent on the platform's availability and continued maintenance, which can be a risk if the service goes down or changes significantly.
  • Potential Overreliance
    Frequent use of Regex101 for developing regular expressions may lead to an overreliance on the tool, potentially hindering the development of strong, intrinsic regex skills.

LeetCode videos

Is A LeetCode Premium Subscription Worth It?

More videos:

  • Tutorial - HOW TO USE LEETCODE EFFECTIVELY...
  • Review - Is LeetCode subscription worth $159?

regular expressions 101 videos

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Category Popularity

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User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare LeetCode and regular expressions 101

LeetCode Reviews

  1. Rohit Singh
    · Blogger at Blogger Cage ·
    best platform to help people practice solving coding problems

    LeetCode is the best platform to help people practice solving coding problems and prepare for technical interviews. The main users are software engineers. LeetCode has over 1,900 questions covering many different programming concepts.

    🏁 Competitors: HackerRank
    👍 Pros:    Faster and cheaper than others|Fast support|Nice interface
    👎 Cons:    Nothing, so far

Examining Top 22 Alternatives to LeetCode
LeetCode is a renowned online platform offering a compendium of coding challenges that enable software developers to sharpen their programming prowess, facilitating their preparation for technical interviews. This industry is populated by various other platforms offering similar value, propelling a competitive landscape focused on innovative solutions to coding practice and...
Source: www.inven.ai
LeetCode Alternatives: Top platforms for coding practice
What are LeetCode and LeetCode alternatives good for?LeetCode💡Interested in leveling up your career? Apply to the Formation Fellowship today!ApplyHackerRankCodeSignalAlgoExpertCodewarsGeeksforGeeksEdabitExercismTopCoderShould you use LeetCode for advanced interview prep?Get holistic interview prep with Formation
Source: formation.dev
Discover the Top Leetcode Alternatives
In the quest for coding excellence, developers often seek platforms that not only challenge their skills but also make the learning process engaging and fun. While Leetcode has been a staple in the coding community for practicing algorithms and preparing for interviews, several alternatives offer unique features catering to diverse learning styles. Let's dive into the best...
Source: codenquest.com
Best Alternatives to LeetCode For Data Science
LeetCode is the platform where people practice their coding skills and prepare for software engineering interviews. It is the primary educational platform meant for the advanced-beginner to an intermediate engineer looking to brush up on their technical concepts. So can LeetCode be used for data science interviews? LeetCode is to help software engineers to get jobs. It...
15 Best LeetCode Alternatives 2023
LeetCode comes with more than 2,000 questions for you to practice. Also, you will get to prepare for interviews on LeetCode. Organizations can also go to the platform to look for talent.

regular expressions 101 Reviews

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Social recommendations and mentions

Based on our record, regular expressions 101 should be more popular than LeetCode. It has been mentiond 881 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

LeetCode mentions (534)

  • In a World of AI Coders and Automation — Soft Skills Will Be Your Superpower
    In tech, we’ve been trained to chase hard skills — the hottest framework, the best architecture pattern, the perfect LeetCode solution. But as we shift into a world where AI writes boilerplate and dev tools think for us, a new question arises:. - Source: dev.to / about 10 hours ago
  • Ultimate Guide to Cracking the Cisco OA in 2025
    LeetCode – Focus on Easy to Medium problems HackerRank – Cisco sometimes uses this platform directly GeeksforGeeks – Good for quick reviews ProgramHelp – Good for Cisco OA. - Source: dev.to / 7 days ago
  • Static Arrays - DSA Notes 📝
    Welcome to my new series on the BIG topic, Data Structures & Algorithms. Follow along with me as I learn everything about DSA to grind Leetcode!💪 Here, you will find all my notes on the topic. Starting everything off with Arrays. 😀. - Source: dev.to / 23 days ago
  • 5 Cool Websites Every Engineer Should Know About 🚀
    LeetCode (https://leetcode.com) Best for: Algorithm practice and coding challenges. LeetCode is the go-to platform for sharpening your problem-solving skills. With a vast range of coding questions and contests, it’s the perfect place to prepare for technical interviews and improve your coding ability. - Source: dev.to / 2 months ago
  • Interview Preparation Tips from an Ex-Meta Engineer
    There are plenty of resources online that can be used to learn about these concepts. Some popular ones are Leetcode, Khan Academy, Youtube. - Source: dev.to / 5 months ago
View more

regular expressions 101 mentions (881)

  • Regex Isn't Hard (2023)
    In practice, the first unpaired ] is treated as an ordinary character (at least according to https://regex101.com/) - which does nothing to make this regex fit for its intended purpose. I'm not sure whether this is according to spec. (I think it is, though that does not really matter compared to what the implementations actually do.) Characters which are sometimes special, depending on context, are one more thing... - Source: Hacker News / about 1 month ago
  • Regex Isn't Hard (2023)
    > unreadable once written (to me anyway) https://regex101.com can explain your regex back to you. - Source: Hacker News / about 1 month ago
  • Catching Trailing Spaces - A Superhero's Story!
    To try out our newfound regex, I will use the website called RegEx101. It's a superhero favourite, so you better bookmark it for later 🔖. - Source: dev.to / 2 months ago
  • How I accidentally wrote a simple Markdown editor
    Let's break it down a bit. You can use Regex101 to follow me. - Source: dev.to / 3 months ago
  • 22 Unique Developer Resources You Should Explore
    URL: https://regex101.com What it does: Test and debug regular expressions with instant explanations. Why it's great: Simplifies regex learning and ensures patterns work as intended. - Source: dev.to / 4 months ago
View more

What are some alternatives?

When comparing LeetCode and regular expressions 101, you can also consider the following products

HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.

Codewars - Achieve code mastery through challenge.

rubular - A ruby based regular expression editor

Project Euler - Project Euler is a series of challenging mathematical/computer programming problems that will...

Expresso - The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer with an extensive knowledge of regular expressions.