Daily (166 day streak)

Easy one, just simulate what is written in the description

https://leetcode.com/problems/minimum-pair-removal-to-sort-array-i/description/?envType=daily-question&envId=2026-01-22

#daily #easy

People, are there mobile devs?

I have bunch of questions about how this shit works. Preferably react native / expo guys. Interested in big abstract picture.

I want to ask how hard it will be to port some web thingy to ios/android, and what is even more critical - to make appstore accept it.

Daily (167 day streak)

Today is pretty hard problem, that involves few concepts that I never heard of. I guess this is the first problem that chat gpt cannot handle as easy as it handles other problems. It is yesterday's problem, but we need to have O(n * log n)

https://leetcode.com/problems/minimum-pair-removal-to-sort-array-ii/description/?envType=daily-question&envId=2026-01-23

#daily #hard

In apartment that I rent in Dublin, I have shared washing machines and dryer. I'm sharing with one more tenant.

There is meter that needs 1 euro for 30 minutes of washing machine / dryer work.

I run out of 1 eur coins, cause I thought 1 eur is per washing, not per 30 mins.

It turned out that 5 CZK and 1 EUR coins are EXACTLY THE SAME SIZE

Save this lifehack :)

Daily (168 day streak)

Happy Saturday. Today is easy problem with hard description.
(hint for understanding the problem is in the comments), this is 1 minute problem once you understand the description

https://leetcode.com/problems/minimize-maximum-pair-sum-in-array/description/?envType=daily-question&envId=2026-01-24

#daily #medium

To not be so lonely and have something else to do, decided to buy guitar, hopefully today will bring this bitch home😁.

Turned out Microsoft music room in the office was very handy, I miss it

Daily (169 day streak)

Nice problem, easy one, good one to remind Sliding Window.

https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores/description/?envType=daily-question&envId=2026-01-25

#daily #easy

some motherfucker, broke it😢

There is time during the year, when I'm getting Vlad Ten's vibe, where I need to do something, produce content, work etc, BUT, I have really huge urge to understand how something works.

I always was a guy who cares only about practical stuff. Then usually I'm starting go deeper with theoretical part and cover all the gaps. This is just how I work.

Last 3 days it was electricity. Cause I have no idea why, I didn't understand how it works, and with that I cannot go deep to learn CPUs.

I will be posting some extremely magical stuff for me, cause yeah, in terms of physics knowledge I'm dumb as stump xD

SO. I was wandering, how our cities are getting the electricity, literally what should happen for me to have lights in my office, under the hood.

Did you fucking know that all electric stations do is just spinning magnets around wires (or vice versa)? That's it.

Turned out that magnet just disturb electrons in wire which is enough to do current. By the way, magnet stays magnet forever, so it is some sort of "inifinite" thing, except you need some work to spin them around.

Ofc in reality it is a bit more complicated, but the general principle is just wiggle magnet, near the wires.

https://www.youtube.com/watch?v=tb3iN4m9Bik

Don't worry, this shit is temporary, once I will encounter the place where science "does not know" how some shit works I will cool down and we gonna again proceed with our system design, Snowflake, relocation, etc :D

I just want a bit of statistics around people who are interested/are in software engineering:

Daily (170 day streak)

Happy Monday, today is easy one - go and collect the coin


https://leetcode.com/problems/minimum-absolute-difference/description/?envType=daily-question&envId=Invalid%20Date

#daily #easy

Daily (171 day streak)

Amazing problem. You know I love graph problems and this is exactly graph problem. Not very hard.

https://leetcode.com/problems/minimum-cost-path-with-edge-reversals/description/?envType=daily-question&envId=2026-01-27

#daily #medium

Daily (172 day streak)

Hard shit. Just skip it, don't waste time. But if you want I will provide an explanation below

https://leetcode.com/problems/minimum-cost-path-with-teleportations/description/?envType=daily-question&envId=2026-01-28

#daily #hard

Oo people, today is amazing leetcode dailt. Go for it