Leetcode Practice

**Enjoy Dim Sum with Friends!** **Come join us for an in person event -** Relax on a Saturday with some new and old friends. Connect in person with others in the DMV Seriously Searching Singles group. For $28 Option A- you will get many scrumptious dishes that are traditionally Cantonese- as much as you want! You can see the menu here: https://www.hanspotmd.com/menu/ I'm charging a $5 fee to hold your spot. We are limiting to 12 people so it can be a more intimate environment. We'll switch seats every half hour so you can meet more people. I will use this small $5 fee to pay for your non-alchoholic beverage ( All beverages are extra!) This way, I will have your contact info too. And there will be separate checks for the group. I will be there to answer any of your dating and relationship questions too! If you can't make it, please let us know ASAP so we can give your spot to another member of the group. There will be no refunds - consider it a donation to the group meetup fees! Thank you. We look forward to seeing you! - Coach Amy and Joe H.

Nervous about reading for others? Or just want to learn how? Do you want an opportunity to practice in a supportive environment? Join Gypsy Dervish as he leads us through the basic practice of reading the Tarot. Ask questions , participate in group readings, and read for other participants. For those of you taking the Tarot 101 classes, this will also be a chance to put into practice what you learned there. ($5 discount on this class, if you take both, making a $10 total discount. Remember to register for both classes individually. You do not need to take Tarot 101 to participate in the practicum.)

**Location**: Tysons-Pimmit Regional Library (Virginia) Conference Room A game development **Working Session** involves 3 key parts: 1. Tell people what you're going to do 2. Actually do stuff 3. Show people what you did That's what we'll be doing for this meeting. We'll briefly tell each other what we're going to do, then work on our projects, then at around 5:30 wrap up to show each other what we did and chat for a bit. You don't have to stay the whole time, so feel free to drop in and out as you have time. All game development skill levels welcome. Whether you're bringing a game you're trying to ship in a month, or you're just planning on following some tutorials or trying out a new tool to improve your skills, use this time to make progress. Working sessions also train you to think about the scope of your work: pick a chunk of work that you can complete in the time that we have. That way you can end the working session with a feeling of accomplishment! **What to bring**: Laptop, Charger, maybe a power strip if you have one handy, any other game development tools you need. Try to download any software you need before the working session. There is Wifi at this location, but it may be slow if you have to download any large files.

🔥 60-Minute Full-Body Circuit Training Workout ⏱️ Structure Overview We will meet at the volleyball court in Founders Park in Alexandria, VA Warm-up: 10 minutes Main Circuits: 40 minutes Finisher: 5 minutes Cool-down: 5 minutes 🟢 1. Dynamic Warm-Up (10 Minutes) Perform continuously, 30–45 seconds each: Jumping jacks Bodyweight squats Arm circles (forward/backward) Walking lunges Inch-worm walkouts High knees Glute bridges Push-ups (easy pace) Goal: Increase heart rate + activate major muscle groups. 🏋️ Main Workout (40 Minutes) Format: 3 Circuits 4 exercises per circuit 40 seconds work / 20 seconds rest Repeat each circuit 3 times before moving on Rest as long as you want between circuits Cool down 5 Min IMPORTANT!!!!! Liability statement: I understand that I am responsible for exercising at my own pace and within my own physical limits, and for monitoring my condition during participation. I voluntarily assume all risks associated with my participation and agree that I attend entirely at my own risk. I hereby release and hold harmless the organizer, and affiliated parties from any and all liability, claims, or demands arising out of or related to any injury, medical condition, loss, or damage that may occur as a result of my participation.

This month, we'llbe looking at the suit of Pentacles. Remember to bring a Tarot deck and something to write with. If you want a chance to put into practice what you learned in this class, you can sign up for the Tarot Practicum, which follows immediately after. ($5 discount on this class, if you take both, making a $10 total discount. Remember to register for both classes individually.)

Today we'll explore the national zoo and play some conversation games along the way. For example, we'll each find an animal we think meets the qualifications of a superlative such as "Most Likely to Start a Band." We'll also engage in mini-monologues about the animals we encounter. Everyone can say what their daily routine would be if they were a certain animal. We'll definitely visit the pandas and meet the new baby elephant Linh Mai. Meet at the Connecticut Avenue entrance. Bring water and wear comfortable shoes. Free but tips welcome.

DC Code and Coffee is an inclusive, informal co-working session. It's community-led and community-run by devs, for devs. People of all skill levels attend. Whether you’re dev-curious, aspiring, or a professional developer, we’d love to have you! Come chat or learn to code on a Sunday afternoon with coffee and cool-inclusive people. Bring your laptop! We typically meet every month on the weekend. **Join our online community!** For all things Tech in DC and to get latest updates and tech events from the DMV area, join the [DCTech Slack](https://dctech.chat/). All DC Code & Coffee announcements are in the #dccodecoffee channel **How it works** Near the beginning of the event, we do an introduction circle. You say your name, what you can help others with, and what you would like help with. You can also share job opportunities. After the introduction circle, everything is self-organized.

A low cost, 6-week beginner-level አማርኛ (Amharic) course with the non-profit organization, the Global Language Network. ## Amharic Foreigner Language Class ሀሎ ! Ready to dive into the world of Amharic? Join our fun and interactive class designed especially for those new to the language. **Details:** #### Amharic Foreigner with Hana Sundays from 6:00pm - 8:00pm ET Apr 12th to May 17th In-person, Farragut Square DC * GLN classes are open to everyone over 18 years of age. * Have a credit or stipend to apply to your payment? Learn more about our credit, stipend, and refund policy on the [Pricing & Course Levels page.](https://thegln.org/pricing-%26-course-levels "https://thegln.org/pricing-%26-course-levels") Ready to learn? **Register [HERE](https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform "https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform").** **About GLN** We are a Washington, DC-based 501(c)(3) non-profit organization with a mission to "Use Language as a Tool to Help Fix Our World." Since 2015 we have been rated #1 Best Language Classes in Washington, DC by Yelp! We are so happy and grateful to have you join our network and we appreciate your support of our mission. Ready to learn? **Register [HERE](https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform "https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform").** **About GLN** We are a Washington, DC-based 501(c)(3) non-profit organization with a mission to "Use Language as a Tool to Help Fix Our World." Since 2015 we have been rated #1 Best Language Classes in Washington, DC by Yelp! We are so happy and grateful to have you join our network and we appreciate your support of our mission.

🎉 **Puzzle Palooza: PUZZLES OF ALL KINDS WELCOME at the Board Room! 🧩** Join us for **Puzzle Palooza** in our puzzle swap series! Whether you're into jigsaw puzzles, crossword puzzles, sudoku, logic puzzles, or brain teasers, this event is for you. Bring any type of puzzle—whether it’s a challenging 1000-piece jigsaw, a captivating 3D puzzle, a fun puzzle book, or a unique brain-bending game—and swap it with fellow puzzle lovers. Let’s share the joy of solving and discover new puzzles to enjoy! 📅 **Date:** Sunday May 3, 2026 🕒 **Time:** 3:00 PM 📍 **Location:** [Board Room DC](https://boardroomdc.com/), 1737 Connecticut Avenue NW, WDC 20009, in the mezzanine. **Event Highlights:** 🌐 **Networking:** Connect with fellow puzzle enthusiasts over a game and some delicious drinks. It's a perfect blend of puzzles, games, and great company. 🧩 **Puzzle Swap Extravaganza:** Immerse yourself in a sea of puzzles as we transform the Board Room into a Puzzle Paradise. Bring your puzzles to trade, and discover hidden gems for your collection. 🎲 **Board Game Delights:** Enjoy the fantastic selection of board games available at the Board Room. Take a break from puzzles and explore a world of strategic challenges and social fun. **Agenda:** * 3:00 pm - 3:30 pm - check in and chat! * 3:30 pm - 4:00 pm - introductions and swap * 4:00 pm - 5:00 pm - social puzzling **How to Join:** 1. **Save the Date:** This is your ticket to Puzzle Paradise. Mark your calendar and get ready for an afternoon of puzzling delight. 2. **Location:** Board Room DC, known for its vibrant atmosphere and extensive game collection. [1737 Connecticut Avenue NW, WDC 20009](https://boardroomdc.com/) 3. **Spread the Word:** Invite your friends and fellow puzzle lovers. Let's make this Puzzle Paradise an unforgettable experience! \*\*\*Please note that if your puzzle is not swapped, you are still responsible for taking it home. **This is not a swap where you will be able to drop off puzzles and leave**\*\*\* For all of our Swap Series, please prioritize community safety. Ensure you're vaccinated before joining us. Your commitment creates a secure space for our shared love of puzzles and good times. See you responsibly at the meetup!

\#\# A low\-cost\, 6\-week beginner\-level Hindi course with the non\-profit organization\, the Global Language Network\. Ready to dive into the world of Hindi? Join our fun and interactive class designed especially for those new to the language. **Details** Hindi Foreigner with Sadaf Sundays from 12:00pm - 2:00pm ET Apr 12th to May 17th In-person, Farragut Square DC Ready to learn? **Register [HERE](http://%5Bhttps://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform%5D(https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform) "\[https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform\](https://docs.google.com/forms/d/e/1FAIpQLSem9IdJEYqsE91SvfEEjIe8FuvoAjOusgE2ab_qkvm3apyjzg/viewform)").** **Additional Information** * GLN classes are open to everyone over 18 years of age. * Have a credit or stipend to apply to your payment? Learn more about our credit, stipend, and refund policy on the [Pricing & Course Levels page.](http://%5Bhttps://thegln.org/pricing-%26-course-levels%5D(https://thegln.org/pricing-%26-course-levels) "\[https://thegln.org/pricing-%26-course-levels\](https://thegln.org/pricing-%26-course-levels)") **About GLN** We are a Washington, DC-based 501(c)(3) non-profit organization with a mission to "Use Language as a Tool to Help Fix Our World." Since 2015 we have been rated #1 Best Language Classes in Washington, DC by Yelp! We are so happy and grateful to have you join our network and we appreciate your support of our mission.

If you’ve already learned the basics of volleyball and want to keep improving your skills while having fun, this event is for you! **Skill Level:** Advanced Beginner (click [here](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/mobilebasic) for details). **Reminders** 1. Attendance: We’ve noticed that the waitlist is growing, so please make sure your name is on the Going list if you plan to play. Our number of nets is limited so this helps avoid too many rotations. If your name is on the list but you don’t show up, it will count as an absence according to Smiley Social rules. Please update your RSVP at least 12 hours in advance if your plans change. 2. Injuries: Play safely and be mindful of others on the court. Respect positions and avoid risky moves that could lead to injury. If you’re not sure the ball is yours, call it before going for it to avoid collisions. 3. Game Rules: Let’s follow the basic volleyball rules, especially the three-touch rule so we can play properly and improve as a team! 4. Waitlist: The waitlist is not first come first serve. We prioritize regular attendees, and will fill empty spots with new faces closer to the event date. **Smiley Social documents:** 1. [Group Rules ](https://docs.google.com/document/d/1HrG35p_0M08leRvCp8XWG3CMkr_GL928XFabl5T6Dvg) 2. [Liability Waiver ](https://docs.google.com/document/d/1W2mq-7m99lmvd7gdWYaSUFtvVg4UGnzV6koafAbHmco) 3. [Volleyball Levels](https://docs.google.com/document/d/1PojSi4qdlRsv1msCHhvpQ43iDc4FfzQwpWCc3kafVMY/)

Goal Focus & Flow is a casual, women only event created for deep focus, intentional progress, and genuine connection. Bring whatever you’re currently working on, studying, planning, writing, researching, job searching, creative projects, or personal goals and spend focused time working independently while surrounded by other women doing the same. The energy is calm, supportive, and rooted in mutual growth. At the end of the session, we’ll do a brief, optional share where participants can talk about what they worked on and what they learned. Sharing insights helps reinforce learning, spark ideas for others, and turn individual progress into collective knowledge. This space is intentionally designed to help women: Stay accountable to their goals ✅ Learn from one another in an organic, low-pressure way Retain what they’re working on by reflecting and sharing ‍♀️ Build friendships while growing side by side The shared focus and reflection create a natural sense of connection, allowing friendships to form through growth rather than small talk. Location note: For women’s safety and comfort, the venue will not be shared publicly. The exact location will be shared privately in the group chat with confirmed attendees. Join the group chat here: https://chat.whatsapp.com/H533SlZi8h70XjkN6iSEws Come as you are. Work at your own pace. Leave with clarity, momentum, and the feeling that you’re not growing alone.

Start with a Pisco Sour, a signature cocktail or mocktail. Enjoy ceviche just like you get in Peru, a choripan sandwich, some Lomo Saltado, Peruvian Chicken or many more delicious choices! [Check out their menu here](https://autenticoperu.com/menu/) Auténtico is born from years of dreams, sharing the rich diversity of Peruvian cuisine with Northern Virginia. Their menu celebrates variety and creativity, where traditional recipes meet subtle touches of innovation. It’s more than food, it’s a fusion of authentic flavors crafted with care, turning every plate into a story worth savoring.

**Online Speed Dating for Mature Cincinnati Singles** Live on Zoom. Real conversations. Local people who value genuine connection and traditional dating. **Pick your age group to register:** - Ages 18-32: [Click to Register](https://tempodating.com/product?productId=476.0&productType=onlineSpeedDating&city=Cincinnati&groupurlname=local-warmth-meetups-for-mature-souls&ar=18-32&face_v=2.0) - Ages 30-46: [Click to Register](https://tempodating.com/product?productId=476.0&productType=onlineSpeedDating&city=Cincinnati&groupurlname=local-warmth-meetups-for-mature-souls&ar=30-46&face_v=2.0) - Ages 40-58: [Click to Register](https://tempodating.com/product?productId=476.0&productType=onlineSpeedDating&city=Cincinnati&groupurlname=local-warmth-meetups-for-mature-souls&ar=40-58&face_v=2.0) - Ages 55+: [Click to Register](https://tempodating.com/product?productId=476.0&productType=onlineSpeedDating&city=Cincinnati&groupurlname=local-warmth-meetups-for-mature-souls&ar=55+&face_v=2.0) RSVP alone does not hold your spot. Register through the link above and complete the quick personality quiz. For mature singles who appreciate meaningful connections and are serious about finding the right person. Host-guided. All ages welcome. Mutual matches shared after the event.

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

Customer identity resolution becomes increasingly complex as organizations scale across multiple systems, regions, and data formats. Traditional rule-based approaches often fail to keep up with data variability, require constant manual tuning, and struggle with real-time processing needs. This session presents a practical approach to building a scalable identity resolution pipeline using AWS services and modern AI techniques. The architecture combines data ingestion through Amazon S3 and AWS Glue, transformation pipelines using Spark on EMR, and machine learning models deployed via SageMaker for entity matching and standardization. Graph-based relationship modeling is implemented using Amazon Neptune to improve resolution accuracy by incorporating household and shared attribute context. We will walk through how machine learning models can be used for name and address normalization, how intelligent blocking strategies improve matching efficiency, and how feedback loops can be introduced to continuously improve accuracy. The session also highlights how serverless components such as AWS Lambda can be used for orchestration and real-time processing. **SPEAKER BIO** Mosaic Syed is a Senior Data Engineering and Cloud Solutions Architect with over 20 years of experience designing and delivering scalable, secure, and high-performance data solutions across global enterprise environments. https://www.linkedin.com/in/mosaic-basha-syed-92300856 **CALL FOR SPEAKERS** Learn more: [https://www.awscolumbus.com/get-involved/](https://www.awscolumbus.com/get-involved/) **THANK YOU** *VEEAM* for hosting our meetup! To learn more about *Veeam*, please visit their website: [https://www.veeam.com/](https://www.veeam.com/) **DIRECTIONS** 8800 Lyra Dr #450 · Columbus, OH go to 4th floor. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Join us at Unity of Columbus for our Weekly Reiki Share, a peaceful and uplifting gathering for connection, healing, and growth. A Reiki Share is a time where Reiki practitioners and students come together to give and receive healing energy in a supportive and welcoming environment. These sessions will be moderated by Columbus Unity Reiki. Reiki is a hands-on energy healing method from Japan that first came to the United States in 1938. Since then, it has grown in popularity and is now widely practiced throughout the West. All levels are welcome, and you do not need to be a practitioner at Unity of Columbus to attend. If you are a Reiki practitioner, a Reiki student, or simply interested in becoming a Reiki student, we warmly invite you to join us. Come practice your healing techniques, learn new approaches, receive healing energy, and connect with a like-minded community in a space of relaxation, renewal, and positive energy.

Practical AI for Power BI Developers A year ago, “agentic AI” was mostly hype for Power BI teams. Today, it deserves your undivided attention. For Power BI pros, there is now a real opportunity to reduce repetitive development work, accelerate delivery, and help developers do more, but only when strong DataOps practices are in place to make AI workflows effective. This session is a no-nonsense introduction to effective AI patterns for Power BI and Fabric development. Along the way, we will make sense of the growing pile of terminology, including skills, plugins, hooks, and MCP. You will see examples of how modern AI tooling can help with development tasks across Power BI and Fabric, along with the prerequisites, guardrails, and DataOps principles needed to use it responsibly. Whether you're burned out on AI hype or already using Copilot CLI daily, this session will show you the foundations that are finally making AI-assisted development genuinely useful.

We practice, dance, and enjoy a BYOB bottle of your favorite wine at the Dublin Ballroom off Sawmill, North, and “milonga” is a social event for tango dancing where dancers socialize. A “*practica*” is an informal social event for tango dancing where dancers focus on practicing the dance; while a “*practilonga*” combines the relaxed atmosphere of a “*practica*” with the format of a “milonga.” We are doing it all! ***Cost is $10 payable to the Teacher.*** *Cost is for the cost of the venue and covers some snacks.* We have had fun doing this event in the past. Please arrive promptly as lessons begin at 2pm. Don't worry about bringing a partner as there will be others at the event from outside the group that: a) might have a clue and b) won't step on your toes. The event is BYOB (similar to our Salsa events), so bring your favorite and a wine glass. We will likely find a place for dinner and drinks after the dance.

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9