I don't think stuff like this is used in development on a daily basis DSA and Leetcode help you learn how to think like a programmer and are needed to clear interview rounds in big tech companies, but you will not really be inverting binary trees all day once you get a job as a SWE
00:05 Introduction to HashMap & HashTable in Java 02:06 Hashmaps provide a way to search for elements in constant time. 06:43 HashMap in Java is a key-value pair data structure that allows fast retrieval of values based on their keys. 09:12 HashMap and HashTable are used in various areas such as programming languages, network routers, virtual memory, cryptography, and string search. 14:58 Introduction to HashMap & HashTable in Java 17:36 In Java, hash code is a method used to convert a string or number into a unique integer value. 22:34 Hashing is used to reduce large numbers to fit within a predefined range. 24:52 Collision in HashMap and HashTable occurs when multiple indices have the same hash code. 29:39 Assumption of simple uniform hashing for equal likelihood of keys being hashed to any slot in the table. 32:04 The hash function used is k modulo m. 37:41 Understanding the universal hashing method 40:23 The size of the table should be dynamically adjusted based on the number of elements. 45:29 Inserting elements in a HashMap has an average constant time complexity of O(n) 48:51 Open addressing is a method to prevent collisions in HashMap & HashTable. 54:07 Double hashing is used to avoid clustering in hash tables. 56:56 Hashmaps in Java: Understanding the internal workings of hashmaps 1:02:17 Open addressing is efficient in terms of cache performance and memory usage 1:05:06 Open addressing in HashMap degrades past 70% due to clustering and array size reduction. 1:09:39 Introduction to HashMap & HashTable in Java 1:13:30 HashMap vs HashTable in Java 1:18:38 Introduction to HashMap & HashTable in Java 1:21:31 HashMap can be used to remove a key from the map. 1:28:18 Introduction to HashMap & HashTable in Java 1:31:29 Understanding the basic operations of HashMap and HashTable in Java 1:37:28 Introduction to HashMap & HashTable in Java 1:39:30 HashMap and HashTable are important data structures in Java. --------- Definitely his way of teaching lets the topic sink-in in much better way, here are some timestamps.
is this a live video?......people take 100s of cuts in their video to give the content and you are making a lecture live and the content you provide is really so top notch...................really need your type of mentor on this platform....................you are really great kunal bhaiya......................your content is far more better than millions subscriber youtube channel........................i save my 100s of hours by seeing your lectures....................hope you continue this great work of spreading knowledge🙌🙌🙌🙌🙌🙌🙌🙌😊😊😊😊😊😊
@KunalKushwaha I had one doubt that when we are trying to perform put operation and when our size / list.size > lf we are trying to rehash so the current item that we are trying to put will never be added to the original list ?
BHAIYA on a serious note your videos are seriously means seriously great but bhiaya plz as a freasher its almost impossible to chose which topic to learn first can you plz prepare a road map for this playlist on java + dsa plzzz please note this bhaiya
8:45 Applications of hashmaps so that lookup is in O(1) 1) Symbol Table {a table where each variable is pointed to its data type and the value in short} (in compilers {C++, Java} and interpreter {Python, JS}) 2) Network Routers {routing the IP addresses} , Port to IP binding 3) Cryptography 4) String search (grep command)
Hii, I am studying this DSA course from Canada🇨🇦 and I am in high school right now, I have one question that after completing this Java DSA course do I need to learn anything more to get ready for a job?? I need some guidance, Pls be helpful 😊
me hashing seekhne aya hu bhai me ab jaake oops ke 10 video dekhu.......oops ke dekhne jaunga to uske video m bologe ki hashing dekho :////// :((((((((
4:30 hasmap for O(1) time complexity in searching 8:30 example Not that good of a lecture. Surely, bro has covered probably all the things but the lecture flow is not that of a teacher
Bro I really don't think he'll make those videos we need to refer some other Java Coding channels, if you get it please share it here, but Kunal Kushwaha's DSA is amazing it's missing only dp and graphs
Nice lecture lot of new things learnt from this lecture good👍 ahead bro and share your knowledge📚. It's very helpful for students who are curious about learning DSA stuffs
DSA + interview preparation playlist: ua-cam.com/play/PL9gnSGHSqcnr_DxHsP7AW9ftq0AtAyYqJ.html
Kunal bhaiya one request while making these DSA videos also mention 3-4 projects in which these data structure has helped you and how😊
I don't think stuff like this is used in development on a daily basis
DSA and Leetcode help you learn how to think like a programmer and are needed to clear interview rounds in big tech companies, but you will not really be inverting binary trees all day once you get a job as a SWE
Kunal is not just a mentor he is person who help us to achieve our goals without any fake suggestions.
00:05 Introduction to HashMap & HashTable in Java
02:06 Hashmaps provide a way to search for elements in constant time.
06:43 HashMap in Java is a key-value pair data structure that allows fast retrieval of values based on their keys.
09:12 HashMap and HashTable are used in various areas such as programming languages, network routers, virtual memory, cryptography, and string search.
14:58 Introduction to HashMap & HashTable in Java
17:36 In Java, hash code is a method used to convert a string or number into a unique integer value.
22:34 Hashing is used to reduce large numbers to fit within a predefined range.
24:52 Collision in HashMap and HashTable occurs when multiple indices have the same hash code.
29:39 Assumption of simple uniform hashing for equal likelihood of keys being hashed to any slot in the table.
32:04 The hash function used is k modulo m.
37:41 Understanding the universal hashing method
40:23 The size of the table should be dynamically adjusted based on the number of elements.
45:29 Inserting elements in a HashMap has an average constant time complexity of O(n)
48:51 Open addressing is a method to prevent collisions in HashMap & HashTable.
54:07 Double hashing is used to avoid clustering in hash tables.
56:56 Hashmaps in Java: Understanding the internal workings of hashmaps
1:02:17 Open addressing is efficient in terms of cache performance and memory usage
1:05:06 Open addressing in HashMap degrades past 70% due to clustering and array size reduction.
1:09:39 Introduction to HashMap & HashTable in Java
1:13:30 HashMap vs HashTable in Java
1:18:38 Introduction to HashMap & HashTable in Java
1:21:31 HashMap can be used to remove a key from the map.
1:28:18 Introduction to HashMap & HashTable in Java
1:31:29 Understanding the basic operations of HashMap and HashTable in Java
1:37:28 Introduction to HashMap & HashTable in Java
1:39:30 HashMap and HashTable are important data structures in Java.
--------- Definitely his way of teaching lets the topic sink-in in much better way, here are some timestamps.
This is soooooo complicated and difficult to understand 😭😭😭😭
A very talented teacher with no haters
😂😂
💀💀💀💀
Bhai aache log ke haters to hote hi hai uske liye hi
simple, very easy, very simple stuff
is this a live video?......people take 100s of cuts in their video to give the content and you are making a lecture live and the content you provide is really so top notch...................really need your type of mentor on this platform....................you are really great kunal bhaiya......................your content is far more better than millions subscriber youtube channel........................i save my 100s of hours by seeing your lectures....................hope you continue this great work of spreading knowledge🙌🙌🙌🙌🙌🙌🙌🙌😊😊😊😊😊😊
Thanks a lot Kunal vi for giving video again🔥Love from Bangladesh💙
I was just searching for Hashing from Kunal. Dint found the video and now he uploaded it 😂
Bro I have been waiting for this video or a longtime ,this video push my motivation to a new level
Thanks for still doing it. We are lucky to have you
Impressive teachings!!!
great teacher ..respect from syria🧡
@KunalKushwaha I had one doubt that when we are trying to perform put operation and when our size / list.size > lf
we are trying to rehash so the current item that we are trying to put will never be added to the original list ?
Thank you bro.
Amazing video
kunal please make one practice leetcode questions video on hasmaps needed
The real G.O.A.T 🔥
🖤👌
Hello, on the notepad please write on dark paper with a white ink.
nice
Finally
25:46
❤❤❤
👍🙏
🥱
He is the guy who can compromise with setup but not with quality of content and explanation 💫💫💫
Thanks a lot kunal Bhaiyya ❤
Please increase the pace of this course because we are getting paused while learning due to long gaps of new videos
This video come out at 2 Am in India
And I am gonna watch it in 2 am
mention in ur cv
King Uploaded His DSA VIDEO AT 2 AM 🥷❤️🔥
#DSAWithKunal
Bro he lives in London so he didn't upload this video at 2 AM
46:04 I have a doubt when doubling the size of hashmap how is O(1+2+4+8...n) becomes O(n)
Watch time complexity lecture
Constants and less dominatings are ignored
Sum of all powers of 2 up to N can be calculated as 2 log2(N) + 1 - 1.
In this remove the constant value
@@ajitupadhyay3744 Hey I started coding this year should I start dsa ?
@@ajitupadhyay3744 still how can you remove the exponent 2^log2(N) ?
👉 Resources
- Join Replit: join.replit.com/kunal-kushwaha
- Lecture code: replit.com/@KunalsReplit/Hashmaps
Thanks Kunal bhaiya ,, aap se contact me aana tha kya karu
BHAIYA on a serious note your videos are seriously means seriously great but bhiaya plz as a freasher its almost impossible to chose which topic to learn first can you plz prepare a road map for this playlist on java + dsa plzzz
please note this bhaiya
just follow the playlist order
8:45 Applications of hashmaps so that lookup is in O(1)
1) Symbol Table {a table where each variable is pointed to its data type and the value in short} (in compilers {C++, Java} and interpreter {Python, JS})
2) Network Routers {routing the IP addresses} , Port to IP binding
3) Cryptography
4) String search (grep command)
When He teaches things gets simpler !
Thanks Kunal Bro!
Hii,
I am studying this DSA course from Canada🇨🇦 and I am in high school right now,
I have one question that after completing this Java DSA course do I need to learn anything more to get ready for a job??
I need some guidance,
Pls be helpful 😊
You should do development also...
Thanks a lot for ur helpful reply😊👍
Chaining and Open addressing part was so blurry for me. I am just feeling overwhelmed for it.
Please Complete DSA as soon as possible
I love watching your videos, bro. Thank you so much for providing excellent content !!!!!!
First
does Interviewer asks implementation ?? im a beginner please reply
Yes
2 $ pepsi, Kunal bro SEXY!!!
me hashing seekhne aya hu bhai me ab jaake oops ke 10 video dekhu.......oops ke dekhne jaunga to uske video m bologe ki hashing dekho :////// :((((((((
the mere fact that you got 88/100 and you didn't consider that a good grade, shows the level you are at, god tier
Had been waiting for this kunal bhai..thank you very much❤
Best best best course even paid course can't beat this DSA course ❤❤❤
kunal bhaiya please upload questions video
1:17:38
Kunal is obessed by karan marks 😂😂😂
In germany we say you are a "Macher"
FINALLLLLYYYYYYYYYYYY
4:30 hasmap for O(1) time complexity in searching
8:30 example
Not that good of a lecture. Surely, bro has covered probably all the things but the lecture flow is not that of a teacher
Demn 2 AM drop
Thank you sir for uploading the video ❤
there was bug coz size of list was increasing so when the value of size changes modulas will be different.
I love this man so much
where his setup gone? :/
Ssly hashmap is here couldnt be any more happier!
Thank you so much Kunal da,for uploading the rest parts gradually.
first
Hey! Kunal I thought the next video you said would be of questions of binary tree
I have posted that already and advance one will come as well
With all due respect, When this series will be completed? It’s almost 2 years since the series was started
@@KunalKushwaha plz upload advance binary tree question
Panauti 28:40 😂😂😂
Thank you for the playlist, came way to far with the playlist and waiting for graphs and DP to grasp the knowledge.😄
Bro I really don't think he'll make those videos we need to refer some other Java Coding channels, if you get it please share it here, but Kunal Kushwaha's DSA is amazing it's missing only dp and graphs
Nice lecture lot of new things learnt from this lecture good👍 ahead bro and share your knowledge📚. It's very helpful for students who are curious about learning DSA stuffs
Believe it or not, i am following his playlist from 2 years😂
Thanks sir ❤ pls come with dsa series
Waiting for Advanced Tree questions and DP....❤
You are just amazing kunal really i dindt understood dsa in my college better than here
Bhai itna deep mat le Jaya Karo bore hota hai kabhi kabhi 😢
Hi Kunal do you have a video on Dynamic Programming
your voice is similar to kenny sebastian
Thanks for teaching us for free, explaining the complex concept with simple & easy approach.
Bro read my mind here 16:03 💀
how do i get this documentation ?
Thanks a lot Man!
Nobody expected that you'll upload 3-4 videos together....
Hats off to your efforts🫡🫡
Finnally finnally finnally finnally FINNALLYYYYY 😭
Thank you soo much❤
Kunal can you please make a video on nested collections please!!!
21:55 where he trolls the over smart people is just too funny 😂
Thank you bhaiya ! for such an amazing lecture.
Amazing
25:44 12/05/24
Waiting for next Video ❤ this was lit🔥🔥🔥as always!
I want all these videos in Hindi
mind boggling but great stuff
Thanks bro... been waiting for it since long time
Let's gooo
was waiting for it love your video Kunal
Thanks a lot Kunal. Your videos helped me a lot!
Appreciate your efforts Kunal. 🙌
Great Lecture Loved it......
Thanks you so much bro
Please upload DP video
Finally
finally u r back
Excellent Sir!
Keep teaching Sir🤲
Great Video!
gracias wey eres muy pero muy inteligente
yaa he is
The Messiah of dsa for beginners❤