Insert Delete GetRandom O(1) - Leetcode 380 - Python

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0:00 - Read the problem
1:30 - Drawing Explanation
8:32 - Coding Explanation

leetcode 380

#amazon #interview #python
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NeetCode

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Hey man, thank you so much for the videos. I was so glad to see one of the questions you covered in my interview, nailed it, then got the Amazon offer! Keep doing what you're doing!!

JKL

That moment when NeetCode has the video posted of the problem you're stuck on. I know you probably hear this a lot, but thank you so much. You are a lifesaver

z.hassan

man being at google u are so much consistent, quite remarkable. can u make a video on "work pressure" at google .

KaranSharma-ewio

I was asked this in a Bloomberg phone interview yesterday.

bumpin

Hey, wanted to thank you as I used your videos to practice before coding interviews and I did well and I got the job!, Thanks man! :D, I'll be sure to subscribe to your Patreon using money from my first paycheck.

protomanx

Hi...please make a video on Logic building and how to increase problem solving skill for beginners...! Using python.

amoghyelasangikar

Hey neetcode, just wanna add another "thank you" message to your stack. Thank you so much and it's been helping me a lot and you are really amazing and I hope to see more in the future!

julius

More tricky than what i figured at first sight ! Thanks for the video :)

numberonep

How to solve this problem on a locally installed python and run the test cases manually??

Ashasri-qv

Hey neet, great video as always! I watched your video on finally being employed the other day and I was curious about if you still plan on creating some videos on system design? I think you're one of the best educators on this platform and I would really love to see your take on the topic :)

hackysack

Thanks bro, your are the best of best i ever scene now days i always looking for your solution because you are explaining all the optimal solution

amalant

It was really a great explanation because it is how we would actually reach the optimal answer. You backtracked the thinking of a person trying to solve this problem first time.

shashankjoshi

what an explanation man, perfect !!! 🙌🙌🙌

pranavkulkarni

hey neetcode curious what you use to record your whiteboard. is it a desktop software or you do it on ipad

Dharmk

hey @NeetCode, I remember this question, the first time I saw the question is you asked in the mock interview to that meta intern youtuber I don't remember his name and I am sure he was rejected at the end of the interview.

kotachaitanya

I think it should be len(self.numList)-1 shouldn't it? Or you'll constantly have the wrong index

sugarjay.cherry

Thanks NeetCode! just want to say it actually won't work when removing the last item! changing line 20 and 21 will fix it.

sabaamanollahi

Feels like you were not feeling well while making this video as I am following yor videos for quite long time now.
We appreciate your efforts bro 🙂

pratikmhatre

every crud operation is O(1) in hashmap. so why we cant use hashmap in this question

sarojpaudel

Can't we just construct a basic hash set our selves? like using linear probing so we actually have a build-in index for elements.

bohanxu

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