andreyka26_se
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Hey, I'm software engineer at Microsoft, with 8+ years of experience. Here we are talking about F(M)AANG big tech interviews: leetcode, system design and corpo life.

YouTube: @andreyka26_se
Instagram: andreyka26_se
TikTok: @andreyka26__
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For leetcode nerds like me. Daily is easy - just bruteforce it, go and collect the coin. I will post later evening, as don’t have access to telegram from laptop
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Daily (187 day streak)

Don't waste your time probably for finding optimal solution, it is O(n^2), however in my opinion therefore it should be easy, not mid

https://leetcode.com/problems/longest-balanced-substring-i/description/?envType=daily-question&envId=2026-02-12

#daily #medium
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Daily (188 day streak)

IMO, it should be hard, as extremely hard to get with intuition. I wasn't able to solve and was hard to understand the solution tbh

https://leetcode.com/problems/longest-balanced-substring-ii/description/?envType=daily-question&envId=2026-02-13

#daily #medium
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andreyka26_se
Promised - done: https://andreyka26.com/ticketmaster-system-design-with-microsoft-engineer #systemdesign
Next days I will drop video about this system design, with drawing and explanations
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Daily (189 day streak)

Amazing problem. In general it is much more enjoyable to solve some "real world" modeled problems. However took me a bit to come up with an idea.

https://leetcode.com/problems/champagne-tower/description/?envType=daily-question&envId=2026-02-14

#daily #medium
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Daily (190 day streak)

Solid and good problem. Go to comment section I will explain how "carry" works for binary summing.

https://leetcode.com/problems/add-binary/?envType=daily-question&envId=2026-02-15

#daily #easy
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So one guy shared "easy" problem to solve, asking, why it does not feel so easy reminding me famous (in sc2) "is it imba or do I suck".

Let's do it
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andreyka26_se
So one guy shared "easy" problem to solve, asking, why it does not feel so easy reminding me famous (in sc2) "is it imba or do I suck". Let's do it
So, the problem, labeled as easy.
We need to make string, containing only "a" or "b" empty, by removing palindromes only.

Problem is not about coding or using some algo, more like brain puzzle, and hoping "Eureka effect" hits you before you go to hint.

https://leetcode.com/problems/remove-palindromic-subsequences/description/
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Daily (191 day streak)

Easy problem again, not bad one, but you will need some hint (check the comment) to not waste 10 minutes as I did.

https://leetcode.com/problems/reverse-bits/description/?envType=daily-question&envId=2026-02-16

#daily #easy
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😎😎😎😎
Leetcode gave me a cap in credit for consistency. Now there is no way I'm not getting these 6500 coins to pay back.
Only 180 days left
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Daily (192/373 streak until LC cap)

Not bad problem, however I wouldn't call it easy, feels like mid, but nice one. Go to comments, I left good hints there

https://leetcode.com/problems/binary-watch/description/?envType=daily-question&envId=2026-02-17

#daily #easy
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Daily (193/373 streak until LC cap)

Easy today, I'm very worried for tomorrow as we had 4 easy problems in a row...

https://leetcode.com/problems/binary-number-with-alternating-bits/description/?envType=daily-question&envId=2026-02-18

#daily #easy
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A bit of Dublin on my way back. Like this city
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I'm not kidding, we are fucked tomorrow, some DP, graph, bits, monotonic stack in one shit will pop up
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Daily (194/373 streak until LC cap)

Easy as well, but bruteforce won't work here, so you need a bit of time to come up with the idea.

https://leetcode.com/problems/count-binary-substrings/description/?envType=daily-question&envId=2026-02-19

#daily #easy
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I'm wondering, how YouTube algo works??
In some random point of time it might decide to show your video for some reason and start growing from that point.

However I like this more than tiktok (random boom for random video for now reason whatsoever), or instagram(just dead shit, not a single one get's boom)
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Wanted to fall asleep at 12. Also me 01:10:
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