What is unordered_set and it's implementation in c++ | Hashing data structure | Hello World

This is the video under the series of DATA STRUCTURE & ALGORITHM in a HASHING Playlist. We are going to learn What is unordered_set in Hashing and How we can implement unordered_set in c++.
We also Provide courses on Competitive Programming and Data structure. Please see our Full Playlist on our Channel.
We also Provide courses on Competitive Programming and Data structure and Algorithms. Please see our Full Playlist on our Channel.
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#hashing #geeksforgeeks #programming

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one who knows to make, others understand. Well done

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sir, your videos are so good, they clear every concept. the way u explain the find() function is very clear to me now.

[@HelloWorldbyprince]

Thanks yaar That's what I am trying to teach And you got it my point

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[@creatorsaurabhs]

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[@HelloWorldbyprince]

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[@HelloWorldbyprince]

🎯 be consistent

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[@HelloWorldbyprince]

Most welcome

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How find and end functions work in if condition without loop??

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[@HelloWorldbyprince]

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please take live class

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bhaiya isme hmne hashing kha use kiya hai......implementation to hua hi ni bs kaam kese krta hai ye bataya gya hai

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Thank you bhaiya...... 💯

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0:51 exactly 🔥

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which song is this 16:47 ?

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👍

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Sir what is means s.find() == s.end()

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great

[@HelloWorldbyprince]

Thanks

[@pushkarroy9740]

you explained find function like it is traversing in the set so then how it is O(1)

[@mahimapatel8706]

it isnt traversing, probably what is does is create a key for the element and then look for that key in direct-access-map and return the position of it in the map

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I would also love that 🥰

[@subhasishbehera1712]

what exactly is umap.find(key).it seems to be of the same type as iterator itr. but why can't we print it if it's a memory location(like a normal pointer)?

[@HelloWorldbyprince]

yess u got it right ... but its a kind of iterator

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6/18 done (7.12.22)

[@P-S-R]

Those who don't understand find function, its like looking for someone you know in a queue. If you know someone then you will stop and talk to them otherwise keep on moving until the end of the line. If you are interrupted then the person you know is found otherwise that person isn't found. Now swap the queue with array's index and person with key.

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Helpful brother

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for (auto it = S.begin(); it != S.end(); it++) { cout

[@HelloWorldbyprince]

Yes there are many ways and it is one of them Let's say 2nd one is For ( auto x : S ) { Cout

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[@HelloWorldbyprince]

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[@ogbuddha7835]

Let the size of set be n. If we write the find function for finding any key will the compiler iterate through all the elements of the set in this case will the time complexity be O(n)?

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At last there should be 2 statements:- Key found Key found But it only printed once there is some error Can u please clarify?

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If u r thinking its not right Then do once a Dry run in your copy without seeing my solution For same question And whatever u get ..u r right then

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not yet

[@MilindGupta]

Last main count kraa bhaiya... Fir find nd count main kya difference hai fir kyunki dono ka toh output same hi tarah kaa aa rha h

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find iterator(pointer) return karta hain and count 1 aur 0 1 if element present 0 if element absent

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complete

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good

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Please do cover the whole STL topic with some examples too.

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[@shivamdalania]

Bhaiya what is the difference between hashing using 'map' and hashing using 'set'? Please reply

[@HelloWorldbyprince]

Please see my full playlist on hashing Aapko fir kabhi v koi v doubt nahi aayega Hashing Data Structure | Complete guide For Interviews DSA | HELLO WORLD | Prince: kzbin.info/aero/PLzjZaW71kMwQ-D3oxCEDHAvYu8VC1XOsS

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[@HelloWorldbyprince]

Thanks a ton Please, if possible then share this channel in your college, groups, or LinkedIn bcoz it's cost nothing to you 😀

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