Daily

Bruteforce - quite easy, but we need something better than O(n*m)
Optimized - might be a bit hard

https://leetcode.com/problems/minimum-operations-to-make-array-elements-zero/?envType=daily-question&envId=2025-09-06

Tomorrow we are streaming during the day: 14-16 UTC + 2
Implementing Redis Sharding POC (basically emulating real redis)

Started

https://www.youtube.com/watch?v=qr8WUdzJN9k&ab_channel=andreyka26_se
https://www.twitch.tv/andreyka26_

Daily

Easy one, go and collect the coin


https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero/description/?envType=daily-question&envId=2025-09-07

#daily

Daily

Easy one - go and collect the coin, guys.

https://leetcode.com/problems/convert-integer-to-the-sum-of-two-no-zero-integers/description/?envType=daily-question&envId=2025-09-08

Today let's play Starcraft2. In 2-4 hours

Daily

Today is interesting question. not bullshit math at least.

https://leetcode.com/problems/number-of-people-aware-of-a-secret/?envType=daily-question&envId=2025-09-09

#daily

Daily

Today quite interesting problem, I liked it, it is legit mid.

https://leetcode.com/problems/minimum-number-of-people-to-teach/description/?envType=daily-question&envId=2025-09-10

#daily

Daily

Today mid feels like easy. Solved in 2 mins, go and collect your coin.

https://leetcode.com/problems/sort-vowels-in-a-string/description/?envType=daily-question&envId=2025-09-11

#daily

Ahahhahah so accurate.
This is my CZ skill after 3.5 years here

Today's morning does not start with leetcode.

I have heard a lot of suggestions and questions about why I don't start/run startup, why keep working on corpo shit, being employee, have manager who tells you what to do, etc.

Here is why:
https://live.andreyka26.com/why-software-engineers-shouldnt-start-startups

Daily

OFC we are doing daily guys. Today daily is joke. Just think about possible cases, and realized that you don't need any simulation at all.

https://leetcode.com/problems/vowels-game-in-a-string/description/?envType=daily-question&envId=2025-09-12

#daily

Daily today

Trivial - go and collect the coin.

https://leetcode.com/problems/find-most-frequent-vowel-and-consonant/description/?envType=daily-question&envId=2025-09-13

#daily

Daily

This problem I actually liked, first of all it at least a bit smells like real world problem. Second, not very hard, exactly for 30-40 mins

https://leetcode.com/problems/vowel-spellchecker/description/?envType=daily-question&envId=2025-09-14

#daily

rephrasing question:
given list of words, and list of queries, return word per query using the following rules:

- if word is EXACTLY matched - return it
- if word is matched EXACTLY but case insensitive (w1.lower() == w2.lower()) -> return the first occurence from the word list. e.g. I have KiTy as query, and list [kITY, KiTY] - I should return kITY as it is the first.
- if word is matched both lowercase, but on the places of vowels there might be any other vowel (also return the first)

Daily

Easy, one minute problem - go and collect the coin

https://leetcode.com/problems/maximum-number-of-words-you-can-type/description/?envType=daily-question&envId=2025-09-15

#daily

Daily

Easier than hard if you know the formulas and coecistance of least common multiple (LCM) and greates common divisor (GCD).

https://leetcode.com/problems/replace-non-coprime-numbers-in-array/description/?envType=daily-question&envId=2025-09-16

#daily