Daily

Should be easy IMO.

https://leetcode.com/problems/number-of-laser-beams-in-a-bank/submissions/1813045010/?envType=daily-question&envId=2025-10-27

#daily, #medium

Maybe yes, maybe no
maybe sex - I don't know

Daily

Easy, nice problem, go and collect the coin

https://leetcode.com/problems/make-array-elements-equal-to-zero/description/?envType=daily-question&envId=2025-10-28

#daily #easy

Gg to my screen I guess

What I'm busy at midnight?

Proving that no fucking real time system design should have pubsub/kafka approach. Applies to
- messenger
- presence service
- realtime video comments

Just don't do it. I'm so fucking pissed that every second resource on internet suggests this, WTF

I'm prepping for the next system design video/article like that one.

You are my audience, community and people that are supporting me. You gotta be choosing the next one

Did you see this new feature? As I understood now you can invite the friends to code with you

Daily

Easy, problem, go and collect the coins

https://leetcode.com/problems/smallest-number-with-all-set-bits/?envType=daily-question&envId=2025-10-29

#daily #easy

wow, so this works like google docs, meaning, you can edit code at the same time. Not sure this is much useful, but interesting feature. I thought it will be something like leaderboard, so you can compete who is faster and who has better solution

My friend asked me if it was because of stress or anger. It wasn’t, but oh my god, sometimes I have such a huge urge to punch the screen when I’m working on my Microsoft-provided, slow-as-hell laptop and it takes five minutes to load Teams - making me five minutes late to some important meeting, for example.

SOOOOOOOOOOO maybe, good decision would be to leave this screen on the desk. You know, this will be my work on mental wellbeing. Unreleased anger - is the worst, it can cause cancer, at least this is what I heard😁

PLS vote today

The next one is stripe

Daily

Was not able to come up with the idea, which was very simple. Once you get it - it is not hard problem anymore

https://leetcode.com/problems/minimum-number-of-increments-on-subarrays-to-form-a-target-array/description/?envType=daily-question&envId=2025-10-30

#daily #hard

Champ breakfast

Was playing with postgres, and I was under impression that it uses MVCC, and that's why it does not need pessimistic locking, as it is checking that version is still the same.

Outcome: all 3 isolation levels: read committed, snapshot(aka repeatable read) and serializable are locking simple CAS (compare and swap)

Daily

Easy without follow up.

https://leetcode.com/problems/the-two-sneaky-numbers-of-digitville/description/?envType=daily-question&envId=2025-10-31

#daily #easy

Daily

It was a long time without linked list and here we go. Actuallly an easy problem, go and collect the coin.

https://leetcode.com/problems/delete-nodes-from-linked-list-present-in-array/description/?envType=daily-question&envId=2025-11-01

#daily #medium