Hashing | Maps | Time Complexity | Collisions | Division Rule of Hashing | Strivers A2Z DSA Course

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Full Course: takeuforward.org/strivers-a2z...
Notes: takeuforward.org/hashing/hash...
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0:00 Introduction
2:01 Why Hashing ?
10:43 Problem 1 - Count elements of array
14:00 Problem 1 - Code
18:06 Maximum hash Array size (Main Vs Global)
22:06 Character Hashing & Problem - 2
30:16 Problem - 2 Code
33:52 Map / Hash Map
38:39 Problem - 1 Code by map
42:03 Problem - 2 Code by map
43:00 Time Complexity (map), unordered_map
47:00 Hashing Methods
54:30 Collision
58:30 Homework
59:56 Outro

[@takeUforward]

Register for free in Coding Contest: bit.ly/RV_CodeRushX Let's march ahead, and create an unmatchable DSA course! ❤ Can someone please add timestamps, I will add them post it.

[@111rhishishranjan2]

Striver, please teach fast, sliding window algorithm and other stuff are incomplete. pls striver be fast little bit in uploading video

[@MayankSharma-vi1ok]

0:00 Introduction 2:01 Why Hashing ? 10:43 Problem 1 - Count elements of array 14:00 Problem 1 - Code 18:06 Maximum hash Array size (Main Vs Global) 22:06 Character Hashing & Problem - 2 30:16 Problem - 2 Code 33:52 Map / Hash Map 38:39 Problem - 1 Code by map 42:03 Problem - 2 Code by map 43:00 Time Complexity (map), unordered_map 47:00 Hashing Methods 54:30 Collision 58:30 Homework 59:56 Outro As always, Your content is full of Important & Valuable stuff. Thank you very much!!

[@Shubham-bh1ph]

striver be fast. we have to complete this atoz course as early as possible you are too late to upload

[@prithammahato1915]

UNDERSTOOD_BHIYA :)

[@Tyrant_Eye]

Could you make a video on implementation of hash table as well as it was asked in Sprinklr interview in intern in our college.

[@darshilpatel7585]

This DSA playlist will be appreciated for hundreds of years.❤

[@SamrathChauhan-re3jb]

I feel like within 20 years from now striver will make another series that works on quantum computers and that will live for 100 years.

[@lost_hand]

If i had teacher like him in my college I wouldn't have watched KZbin channel before day of exam... The way he teach and make us understand concept...hatsoff sir Also thank u for free DSA course🙏🙏

[@sumeght1878]

🤣🤣🤣🤣🤣

[@falgunitagadkar4097]

Oh My God!!!!!!!!! Even after knowing Hashing came here...because I was very sure...Striver's video will definitely have something valuable. You are truly a Gem Striver. Always grateful to you🙇‍♀

[@Manishgupta200]

In glaobl and main(), max size decleration concept in array is very helpful and In another conceptual question also. Your best thing in every tutorial i liked so much is you taught us question from BFS approach to Optimised approach and by different method you solved question and also taught us the preferable method accoding to it's space and time complexity. Topic covered:- -> For loop method (BFS) -> Array hashing (Optimised) -> Number hashing -> Character hashing (2 method) -> Maximum size concept in decleration of array size. -> TC difference by using in map and unordered_map STL (normally Unordered_map way is prefered by you) -> Method of Hashing -> Explain Division method - linear chaining concept -> Collision (that's why why worst case TC is O(n) by using unordered_map STL) -> Key-Pair data structure and data type decleration difference in map & in unordered_map Thankyou Striver for such an amazing content. 🔥🔥

[@animeislob3620]

bhai lekin ye concept java ma to apply nhi hota h na? kyuki mene dekha ma 2^31 - 1 size ka bhi declare kr paa rha hu

[@vaibhavagarwal602]

I domt get why you wasted time in writing this dude

[@harshkunal7365]

Hashing notes link - drive.google.com/file/d/1iShWR1EH3YKEFIRMSyyk8srAYnkgG9tM/view?usp=share_link

[@izukumidoriy633]

💯💯

[@nikhilsharma2236]

bro give all notes link

[@nikhilsharma2236]

i meant all topics apart from hashing

[@shivangigarambha4981]

Understood! I have watched many videos to understand hash and map, but this is the best among all of them.

[@harshitrajsharma01]

Understood in a very clear manner. The best structured DSA playlist

[@user-fo8fi4bb7m]

You are a great teacher, and I want to be like you, and teach others who were in need, I am learning topics In a way to teach others, so that my concepts are also getting revised, simply using Feynmann technique and I am huge fans of your Brother, Thanks a lot from my heart. I can promise you, you can hear my name like you in upcoming months or years, but sure you will.

[@omgaikwad5962]

Understood ! Excellent teaching.

[@mrbeastlove77]

Amazing content you are making DSA like a interesting web series .... Thanks alot brother ... Please make more contents

[@changed217]

Understood, brilliant explanation, and for the person who has written the article on the site too also brilliant, thank you so much.

[@ronakvaghela2714]

The explanation you gave in collision and worst case scenario was so good and it was brilliant. Thankyou so much for making this playlist. It means alot to me and other people following this playlist.!!

[@ketanjagat3005]

Understood everything very well❤❤❤❤❤❤ and even learned so many new things by you. Thankyou so much bhaiya❤❤❤❤ I would recommend everybody to have this sheet for better understanding of DSA and even things which might anybody will tell you for FREEE!!!!!!

[@bhaveshkumar6842]

He's the best by a very big margin when it comes to teaching DSA concepts.♥

[@madhavagrawal5581]

A person making impact on many people life!!! understood

[@harshraje516]

very nice video understood whole concept of hashing in one go at 1.5 speed 😇

[@cinime]

Understood! Super fantastic explanation as always, thank you very much!!

[@tonystark-oq3mm]

Understood ! Amazing content as always ! Please keep it going.

[@yuktijhawar6729]

I was recommended by a friend to watch this playlist. And it is extremely helpful and amazing. Thank you so much sir for providing such a great quality of content.

[@deepankshugautam9289]

Understood!!! thank you and I'm really grateful I found you

[@sid17_cgdyt]

superb striver ... Understood it very well

[@vardhamanbhandari5644]

Hands off to your efforts🙌🙌

[@sukhpreetsingh5200]

Amazing lecture 😍

[@noobgamer9115]

understood and thank you for your A2Z DSA SHEET this helps me to clear my all basic concepts in programming as well as in DSA

[@9a56mahabirjaiswal9]

I tried to learn hashing /hash map 2-3 times from different channel but didn't able to understood so I keep on skipping this topic everytime but this is the first time that I am able to understand it in very easy way

[@UECHarshaVardhanRavipalli]

You are really amazing bhai!! We are eagerly waiting for your next video that you upload!!!` Please upload as soon as possible bhai!😊

[@The_CR_Cosmos]

Man you are amazing. thank you so much for getting me back on track

[@joydeepdas29]

Understood. Thanks for the awesome tutorials 😄

[@ManavMSanger]

Understood. Thank you. This was a valuable video.

[@ananya2289]

Best explanation, thankyou so much. I was struggling with understanding this so much & now its so clear and seems doable.

[@asmittyagi6250]

Wow, just stumbled upon this video and I can't believe what I've been missing out on! I used to be intimidated by DSA, especially topics like hashing, but your mind-blowing explanation has changed everything for me. I regret not starting earlier, but hey, better late than never. Your teaching style is nothing short of incredible - it's like having a god-like figure guiding me through the complexities of DSA right on my screen. Thank you, sir, for making this seemingly daunting task so much more approachable. Love you for this, and I'm excited to dive deeper into the world of algorithms now!

[@sanatanihinduharekrishna]

understood everything, thank you sir.

[@039puneethbatchu2]

Understood... You are just amazing broo 💯💯

[@msdarshankirthic9990]

understood bruh, thank you so much ❤

[@stith_pragya]

UNDERSTOOD.........Thank You So Much for this wonderful video.................🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻

[@rishavvatsa9793]

understood❤ Thankyou bhaiya for this amazing explaination

[@manavsingh5919]

Thank you so much striver...I understood everything🙂

[@mdatiquealam8050]

Understood !! thank you so much for this striver bhai❤❤

[@roshankumar-of5ky]

understood and loved it ❤

[@aatirali7696]

WAITING FOR THIS SIR THAN YOU SO MUCH ♥

[@shivanand0297]

im doing dsa in typescript without a problem all thanks to you striver my man

[@annoniimous]

i have to no words to appreciate your course... #bestAmongAllPaidResources

[@parth2439]

Hope you start making video with consistency once to you reach Poland. Thank YOu :)

[@venkatarao.gurram]

your teaching is awesome

[@sunnymishra2120]

great class as always!😃😃

[@ronitpunjwani5384]

really really appreciate you man! UNDERSTOOD!

[@sashikumarreddy9081]

understood. best channel for dsa.

[@mrsttechno5974]

I understood everything lots of thanks to you my best sir💝👍💪

[@shwetankdwivedi513]

Very nicely and easiy explained, just wanted to add, like it would be great that we study about the load factor as well in hashing because some times that question also comes in an interview that what is load factor, *why ideal load factor is around 0.7*, also if people have time they can try to implement this division method for implementing Maps, It would give a great insight and a confidence that how things are working. Thanks.

[@Hipfire786]

understood everything explained wonderfully

[@darkexodus6404]

Very neat explanation. Which software do you use for writing? Seems similar to one note.

[@mrsubham277]

Waiting for it after watching pattern printing and math video 😄🤓

[@GM-pk4li]

this course is better than any paid course 100 percent agree

[@moonchild4632]

Understood! you are such a fantastic teacher.

[@satyamraj6957]

thnx a lot striver please continue to teach in the same way you are an awesome teacher had it not been your efforts I guess I would not have been able to code anything once again thnx a lot

[@vikramjangid985]

what a wonderful explanation of each and every minor thing. Amazing video understood everything. Thank you for the best explanation.

[@King_Dragon_Luffy]

Specifically came to KZbin after watching the embedded video to hit the like button greatly appreciate your efforts :)

[@aryanpatel6490]

AMazing content striver you are like a big brother to me 😇😇😇😇

[@simpy2965]

Completely undestood bro thanks❤

[@AmanKumar-fe2ez]

Thankyou Striver bhaiya

[@saimanojmohanty1]

Understood. Thanks for such great stuff.

[@saketjaiswal9381]

a lecture on nested vetor vectorint such things are getting confusing vector of vector i have watched stl still little confused

[@ngarts2614]

Was waiting for this bhaiya..thank you so much

[@ankurmandal8899]

Yes, I understand it completely sir

[@thelearner4930]

Understood bhaiya , thanks for this course!!

[@harishkulkarni7244]

Understood, thank you so much!

[@PRALAY.THAKUR]

Great explanation Bhaiya 🎉🎉❤❤

[@user-pf5mf6nu3u]

Your command of English is commendable. You speak so clearly and do not even use fillers. Please tell me how and from where did you practice English speaking? please guide me so that I can also improve my english.

[@TheViralClovers]

read good English novels

[@rishabhkumar-qs3jb]

awesome series, like it very much :)

[@AbdurRahman-sp6sm]

great vedio content, I am grateful to you

[@makingthamilan1592]

great man, thanks for the course🥰

[@AshishSingh-he2qo]

Thanks bro u help me lot in my clg there teching method i can't follow thanks bro 👍👍♥️

[@wahabshaik6843]

understood striver u r one of the best

[@jaisarita]

Awesome teaching style 👏🏼

[@darkjokeryt9856]

understood, thankyou very much, we appreciate your efforts.

[@dhruvpatel8037]

Understood !, Thank You :)

[@VINAYKUMAR-cv7nv]

Thanks for this wonderfull course 😍😍

[@shubhamsharma8364]

Best video on Hashing🎉

[@adarshsingh5697]

Ek hi dil hai kitni baar jeetoge bhaiya..@striver

[@Mohammad46552]

understood. Great content

[@leetcoder6569]

Thanks, striver_79, ur high class lectures of DP helps me a lot.

[@learncreative4732]

Sir one request please add your websit graph and dp rest note . It is very useful for me.

[@takeUforward]

@@learncreative4732 Done

[@learncreative4732]

@@takeUforward thanks

[@samuelfrank1369]

Understood. Thanks a lot.

[@it_08amanagarwal35]

Bro excellent explanation ⚽

[@bhaveshvaishnav844]

Understood! Love from agra.

[@yikes3807]

thank You striver!!

[@Atul_25]

Absolutely loved it 🤩🤩

[@VipinKumar-jd5ug]

Great stuff. Just waoo❤❤❤

[@notmrabhi1]

Best.. Thank you so much Bhaiya

[@037_shivamkumar7]

Amazing lec..

[@anubhav4306]

Understooood bhaiya!!!!

[@DevashishJose]

Understood. thank you.

[@aswiniv3516]

understood sir, thanks a lot

[@user-is6ky7pp2n]

Understood !! Keep Going Sir !!

[@PUNEETHKUMARVH]

Understood ,thanks striver!

[@susmitapatil4847]

Understood. Best content

[@Dinesh-rn9iy]

best teacher onboard!💯💯💯

[@utsavseth6573]

Well, some things just leave you speechless, this series is for sure one of them.

[@priyankavasam8769]

wonderful lecture🤩🤩

[@mohammadanaskhan9294]

Understood Bhaiya !!