Daily (241/373 streak until LC cap)
Interesting problem, a bit bullshit as there is no pattern to learn, but fun, with funny corner case xD
https://leetcode.com/problems/walking-robot-simulation-ii/description/?envType=daily-question&envId=2026-04-07
#daily #medium #nopattern
Interesting problem, a bit bullshit as there is no pattern to learn, but fun, with funny corner case xD
https://leetcode.com/problems/walking-robot-simulation-ii/description/?envType=daily-question&envId=2026-04-07
#daily #medium #nopattern
👍4
Daily (242/373 streak until LC cap)
Should be easy instead of mid, 2 mins to solve, just simulate what is written. The only thing that worries me the number "I" in the title. Probably tomorrow we gonna have fucking hell problem.
https://leetcode.com/problems/xor-after-range-multiplication-queries-i/description/?envType=daily-question&envId=2026-04-08
#daily #medium #nopattern
Should be easy instead of mid, 2 mins to solve, just simulate what is written. The only thing that worries me the number "I" in the title. Probably tomorrow we gonna have fucking hell problem.
https://leetcode.com/problems/xor-after-range-multiplication-queries-i/description/?envType=daily-question&envId=2026-04-08
#daily #medium #nopattern
🔥3😁2
andreyka26_se
Daily (242/373 streak until LC cap) Should be easy instead of mid, 2 mins to solve, just simulate what is written. The only thing that worries me the number "I" in the title. Probably tomorrow we gonna have fucking hell problem. https://leetcode.com/problems/xor…
Daily (243/373 streak until LC cap)
Told you guys :) Don't do this nonsense, it is legit nonsense. I would rather spend time tomorrow and eventually finish fucking article.
https://leetcode.com/problems/xor-after-range-multiplication-queries-ii/description/?envType=daily-question&envId=2026-04-09
#daily #hard #nopattern
Told you guys :) Don't do this nonsense, it is legit nonsense. I would rather spend time tomorrow and eventually finish fucking article.
https://leetcode.com/problems/xor-after-range-multiplication-queries-ii/description/?envType=daily-question&envId=2026-04-09
#daily #hard #nopattern
👍3
Daily (244/373 streak until LC cap)
Easy one, actually good for some simple leetcode patterns. Recommended
https://leetcode.com/problems/minimum-distance-between-three-equal-elements-i/description/?envType=daily-question&envId=2026-04-10
#daily #easy #pattern
Easy one, actually good for some simple leetcode patterns. Recommended
https://leetcode.com/problems/minimum-distance-between-three-equal-elements-i/description/?envType=daily-question&envId=2026-04-10
#daily #easy #pattern
👍3
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VIEW IN TELEGRAM
Back in the game. Also want to try again some group trainings for a couple of times to remind myself some youth moments
🔥15
Daily (245/373 streak until LC cap)
The same problem as yesterday with stricter constraints. (Yesterday's optimized solution will work)
https://leetcode.com/problems/minimum-distance-between-three-equal-elements-ii/description/?envType=daily-question&envId=2026-04-11
#daily #medium #pattern
The same problem as yesterday with stricter constraints. (Yesterday's optimized solution will work)
https://leetcode.com/problems/minimum-distance-between-three-equal-elements-ii/description/?envType=daily-question&envId=2026-04-11
#daily #medium #pattern
👍5
https://andreyka26.com/messenger-system-design-is-wrong
Eventually, after 1 month, I did it 😁
Please share your thoughts. It is just article that explains the problem but does not have a solution
#systemdesign
Eventually, after 1 month, I did it 😁
Please share your thoughts. It is just article that explains the problem but does not have a solution
#systemdesign
andreyka26 tech
Messenger System Design is WRONG
Why do all popular Messenger System Design solutions - Direct GW, Pub/Sub by user, Pub/Sub by chat - fail to linearly scale for large chats with 10k+ participants? This article breaks down the fundamental bottleneck in WebSocket Gateway scaling and proposes…
1🔥19❤2
andreyka26_se pinned «Oookay, now I hit System Design problem I am not able to solve(partially). Problem: Design Messenger, but not pussy Whatsapp with 250 user/chat, but rather gigachad Telegram scale with 200k user/chat. I already consulted with 3 principals, 2 of them from…»
Daily (246/373 streak until LC cap)
Good problem to remind yourself DP. Not hard tbh (at least topdown)
https://leetcode.com/problems/minimum-distance-to-type-a-word-using-two-fingers/description/?envType=daily-question&envId=2026-04-12
#daily #hard #pattern
Good problem to remind yourself DP. Not hard tbh (at least topdown)
https://leetcode.com/problems/minimum-distance-to-type-a-word-using-two-fingers/description/?envType=daily-question&envId=2026-04-12
#daily #hard #pattern
👍3❤2
Daily (247/373 streak until LC cap)
For tomorrow. Easy problem for 1 min, go and collect the coin
https://leetcode.com/problems/minimum-distance-to-the-target-element/description/?envType=daily-question&envId=2026-04-13
#daily #easy #nopattern
For tomorrow. Easy problem for 1 min, go and collect the coin
https://leetcode.com/problems/minimum-distance-to-the-target-element/description/?envType=daily-question&envId=2026-04-13
#daily #easy #nopattern
👍5
Daily (248/373 streak until LC cap)
Interesting problem, but pretty hard to come up with DP recursion here, wasn't intuitive for me.
https://leetcode.com/problems/minimum-total-distance-traveled/description/?envType=daily-question&envId=2026-04-15
#daily #hard #pattern
Interesting problem, but pretty hard to come up with DP recursion here, wasn't intuitive for me.
https://leetcode.com/problems/minimum-total-distance-traveled/description/?envType=daily-question&envId=2026-04-15
#daily #hard #pattern
👍2
Daily (249/373 streak until LC cap)
Nice and easy problem, no specific pattern, 2 mins coding.
https://leetcode.com/problems/shortest-distance-to-target-string-in-a-circular-array/description/?envType=daily-question&envId=2026-04-15
#daily #easy
Nice and easy problem, no specific pattern, 2 mins coding.
https://leetcode.com/problems/shortest-distance-to-target-string-in-a-circular-array/description/?envType=daily-question&envId=2026-04-15
#daily #easy
👍2
Daily (250/373 streak until LC cap)
Not bad and not that hard, but a bit puzzling with indices of indices xD
https://leetcode.com/problems/closest-equal-element-queries/description/?envType=daily-question&envId=2026-04-16
#daily #medium
Not bad and not that hard, but a bit puzzling with indices of indices xD
https://leetcode.com/problems/closest-equal-element-queries/description/?envType=daily-question&envId=2026-04-16
#daily #medium
👍3
Okay, slowly but surely, I am getting more annoyed by snowflake 😁
I definitely like my prev project at MS more. Will think what I can tell about it and stay in boundary of nda.
I definitely like my prev project at MS more. Will think what I can tell about it and stay in boundary of nda.
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