CD | Parsers | CLR(1) and LALR(1) Parsers | Ravindrababu Ravula | Free GATE CS Classes

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Ravindrababu Ravula

Ravindrababu Ravula

10 жыл бұрын

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Пікірлер: 292
@utkarshkandpal5960
@utkarshkandpal5960 8 жыл бұрын
this was my "first" time and it was easy to "follow"
@GreyWarden_
@GreyWarden_ 8 жыл бұрын
+utkarsh kandpal Get out.
@MegaNerevar
@MegaNerevar 8 жыл бұрын
+utkarsh kandpal well done lol
@saswatprusty6691
@saswatprusty6691 8 жыл бұрын
Well now you should "look ahead"
@utkarshkandpal5960
@utkarshkandpal5960 8 жыл бұрын
+Bandar Alshareef Okay , I am convinced.
@francisjohn7963
@francisjohn7963 7 жыл бұрын
now you can parse the exam
@4_real_bruh
@4_real_bruh 2 жыл бұрын
My man, it's been 7 years and you're still a life saver. Thank you very much. Greetings from Germany!
@sdragonxlr8storm
@sdragonxlr8storm 4 жыл бұрын
On behalf of our entire Compiler Design batch, you have made us pass our compiler exams this Fall. Thank you so much for doing this. ♥️
@ambikeshkumarsingh193
@ambikeshkumarsingh193 7 жыл бұрын
26 minutes before watching this video , i thought i would be failed in exam ,, but now feels like a topper... thnk u sir.
@arnabsom3251
@arnabsom3251 7 жыл бұрын
ye banda sabko pass karayega
@archanayadav5786
@archanayadav5786 6 жыл бұрын
arnab som 😀😅
@Mohanraj-wt3sm
@Mohanraj-wt3sm 5 жыл бұрын
@@archanayadav5786 3
@arnobchowdhury1804
@arnobchowdhury1804 4 жыл бұрын
hello.. similar name.
@swatantrachoudhary3511
@swatantrachoudhary3511 3 жыл бұрын
@@arnobchowdhury1804 merge ho jao to dono
@bhupendrasahu5401
@bhupendrasahu5401 3 жыл бұрын
@@swatantrachoudhary3511 😁
@RohitSingh-oe8ly
@RohitSingh-oe8ly 10 жыл бұрын
you are a lifesaver .god bless you.....
@darshitpatel2011
@darshitpatel2011 9 жыл бұрын
for me too
@doonlytheshits2478
@doonlytheshits2478 7 жыл бұрын
Rohit Singh yeah, u snatched the words right away from my mouth...😂😂😂
@PraveenSanju
@PraveenSanju 6 жыл бұрын
Me too
@himanshu6489
@himanshu6489 5 жыл бұрын
#meetoo
@bindupriya7894
@bindupriya7894 4 жыл бұрын
Yess.... 🙋‍♀🙋‍♀
@benjaminmusasizi3777
@benjaminmusasizi3777 6 жыл бұрын
I cant thank you enough sir. The text book was so complex and you have made what would easily be days of book worming and condensed it into a concise video. Thanks so much. God bless. Am so grateful
@rulingkid
@rulingkid 7 жыл бұрын
I am gonna pass this semester simply because of you man ,hats off ,You're a legend!
@YogeshPateliOS
@YogeshPateliOS 7 жыл бұрын
Super job .... Easy explanation brilliant sir Thank u so much sir👍🏻
@werefuxed7059
@werefuxed7059 6 сағат бұрын
I'm really thankful for all your hard work.
@jpt909
@jpt909 6 жыл бұрын
Instead of paying my university .... i am ready to pay u... ur a god 😂😁
@poonamkamble8355
@poonamkamble8355 3 жыл бұрын
You are god no.. You are good ayse bolo
@nehemiahmaddela5011
@nehemiahmaddela5011 3 жыл бұрын
@@poonamkamble8355 Rip english😂😂
@shivateja7574
@shivateja7574 3 жыл бұрын
@@poonamkamble8355 You are trying to say something. But I coudn't understand
@shinjinibanerjee1058
@shinjinibanerjee1058 9 жыл бұрын
Thank you Ravula sir...your lectures made me understand LaLR(1) very strongly.. Thanks a lot.
@apekshakatarni3502
@apekshakatarni3502 9 жыл бұрын
i agree....better than any tutorials-offline or online
@snatchphotoapp9984
@snatchphotoapp9984 9 жыл бұрын
You have an error @12:50 on b it should go to the existing state: A --> b., $
@SahityaReddyIam
@SahityaReddyIam 9 жыл бұрын
Snatch Photo App It's not an error,he just wrote it twice but named them the same so it doesnt matter
@thomascherian5209
@thomascherian5209 8 жыл бұрын
+Snatch Photo App Watch upto 18:07 .He will rectify it :)
@bindupriya7894
@bindupriya7894 4 жыл бұрын
That was not at all a error....he have written twice and they are also same.. So he also named them as same canonical items.. Go through it once.. 🙋‍♀
@ajayunni7927
@ajayunni7927 8 жыл бұрын
Not all super heroes wear masks.. Lol.. Thanks a ton
@SapphireTvYt
@SapphireTvYt 3 жыл бұрын
I am from 2020 , there is pandemic going on , and masks are essential for us , it's not about heros anymore
@riteshbhatt9476
@riteshbhatt9476 3 жыл бұрын
@@SapphireTvYt 🤣🤣
@nag0074
@nag0074 3 жыл бұрын
this joke didn't age well.....
@snigdhagupta4476
@snigdhagupta4476 8 жыл бұрын
The concepts are well explained. We couldn't have passed compiler design without your videos. Thank You so much.
@SaurabhKumar-pw3yb
@SaurabhKumar-pw3yb 8 жыл бұрын
thank u so much for creating such informative videos... u r a lifesaver...
@Horebmngshrts2023
@Horebmngshrts2023 5 жыл бұрын
You have hammered into my mind THANK YOU MY BRO
@Chesstreamer
@Chesstreamer 4 жыл бұрын
what u do is unmatchable,a big salute to u,best teacher ever
@aroundtheclock1812
@aroundtheclock1812 7 жыл бұрын
Hi Sir. I am a computer sc and engineering student. I had not attended a single class of Compiler Design in college as I could not understand a single thing our teacher explained. Then a friend of mine suggested to follow your videos and thank God he did, I have understood every single topic, more than I expected. I want to thank you from the bottom of my heart for making the subject so easy to understand. My final semester exams are going on and tomorrow I have this paper. Hope I score well!! Thank you!
@supreethashetty1518
@supreethashetty1518 6 жыл бұрын
" I had not attended a single class of Compiler Design in college as I could not understand a single thing our teacher explained." If you did not attend single class how did you know if teacher taught well or not ? Just a doubt. No offence
@herrogamer2606
@herrogamer2606 6 жыл бұрын
LOL
@joelsebastian.k2065
@joelsebastian.k2065 5 жыл бұрын
@@supreethashetty1518 Are you her teacher ?? Just asking
@kunalraisinghani8872
@kunalraisinghani8872 8 жыл бұрын
thankyou so much sir,!! Brilliant explaination!! understood everything so easily!!
@Milena97xoxo
@Milena97xoxo 4 жыл бұрын
Ravula, the best teacher ever!!!!
@revanth761
@revanth761 5 жыл бұрын
Thank you sir.. your video easy to understand and good explanation you provide the classroom notes in exam time.. good bless you
@shivakumar-zb8ii
@shivakumar-zb8ii 7 жыл бұрын
sir u r best when compared to my lady professor about the way of explaining the sums and concepts of cd and flat.i get nothing from her teaching but I get everything from u r teaching thanks for u r subject videos
@abhisheknag6689
@abhisheknag6689 8 жыл бұрын
Crystal clear, now. Thanks bro.
@vamshimanu5046
@vamshimanu5046 6 жыл бұрын
great lectures by you man ....... it is evry useful for all .,,,,,,thank you so much ;)
@bindupriya7894
@bindupriya7894 4 жыл бұрын
Excellent sir...🙏You really helped me a lot...as i felt that this one is like a headache for me...its better to leave... But after watching your explanation i really got amazed that i solved it by my own later... 😊Really this video clarified all my doubts.. Am so happy now.. 🙏 Thank u so much sir.. May god bless u abundantly
@batoolmalkawi191
@batoolmalkawi191 7 жыл бұрын
you're a lifesaver! thank you, this was really helpful :)
@rohansaraf4566
@rohansaraf4566 8 жыл бұрын
Excellent video Sir...nw i can solve this with different examples
@harshitruhela9492
@harshitruhela9492 5 жыл бұрын
Thank you so much sir...may God give you all the happiness 🙏🙏
@rksinghrulz
@rksinghrulz 8 жыл бұрын
Real good work. Was of great help. Thanks mate.
@avonray9147
@avonray9147 5 жыл бұрын
Why is the goto of "S" in the CLR(1) Parsing Table blank, if it's supposed to be the same as LR(0) or SLR(1)? Shouldn't there be a goto (I0-->I1) on reading "S"?
@istiakmahmod2687
@istiakmahmod2687 2 жыл бұрын
did you get the answer ? is it because S'->S production is not the final item or something ?
@mahadevhatti5228
@mahadevhatti5228 2 жыл бұрын
hey! did you get the answer?
@istiakmahmod2687
@istiakmahmod2687 2 жыл бұрын
@@mahadevhatti5228 he forgot to put S
@Nada-yc8uo
@Nada-yc8uo 4 жыл бұрын
This was 2014 ...yet it is the best explanation I found
@anisfathima7185
@anisfathima7185 7 жыл бұрын
First of all I really thank you sir, your way of teaching is amazing..Your video is very very useful for me.. once again thank you very much sir.....
@nikhilverma4976
@nikhilverma4976 7 жыл бұрын
Excellent explanation. Your videos are definitely helping me in my project.
@nidhichauhan6927
@nidhichauhan6927 7 жыл бұрын
helpful video..way of teaching is appreciable..👍👍
@aishwaryaramesh4877
@aishwaryaramesh4877 5 жыл бұрын
The lecture was amazing and very easy to follow and practice :) I just have a small doubt, shouldn't there be a '1' at the 0th row and S column?
@nikunjramani5190
@nikunjramani5190 7 жыл бұрын
easy explanation................super job sir.........respect man
@ritikasharma2568
@ritikasharma2568 6 жыл бұрын
Thank You Sir. All videos are very precise and helpful.
@dharmendraprajapat950
@dharmendraprajapat950 7 жыл бұрын
Awesome sir i got every point what i missed in MADEEASY cause everything u explained is made easy classroom notes
@shikshajain8714
@shikshajain8714 6 жыл бұрын
Thankyou very mch sir for your guidance and use of easy approach to solve the question.... 😊
@girigauravbhatnagar1
@girigauravbhatnagar1 8 жыл бұрын
Wonderful explanation . Clear and precise .
@poojasingh-uu6bz
@poojasingh-uu6bz 5 жыл бұрын
best way of teaching.. love it 😇
@chetanbasavanal2773
@chetanbasavanal2773 7 жыл бұрын
you been a best in this sir, thank you it help us a lot :)
@fxanalytica2488
@fxanalytica2488 7 жыл бұрын
Thankyou sir...:) fan ho gye aapke...u saved me for today's exam at 10 :)
@string1234512
@string1234512 9 жыл бұрын
Thank You ~! Your lecture video is so good!!!
@sheetalnaik1541
@sheetalnaik1541 7 жыл бұрын
The two productions A->b.,$ and there is one more production A-->b',$ the same? the I2 on b we get A->b.,$ and I6 on b we get the same production with the same look ahead. So that should be same right?
@sarathypartheepan1388
@sarathypartheepan1388 8 жыл бұрын
Thank you sir :) ...nw i can able solve myself with diff examples
@upasananagpal2375
@upasananagpal2375 8 жыл бұрын
amazing video....best taught (Y)
@sharma_ji_hai
@sharma_ji_hai 7 жыл бұрын
awesome videos sir I cleared my all doubts of parser thank u so much
@kashu8411
@kashu8411 2 жыл бұрын
Perfect in all ways🍁 Thanks A Lot Sir!.
@hamzashafiq573
@hamzashafiq573 6 жыл бұрын
very good , even Pakistani students are following your lectures .. much respect :)
@saurabhshrivastava224
@saurabhshrivastava224 6 жыл бұрын
Are the number of reduced entries in CLR(1) always less than that in SLR(1)?
@prashantpanwar2504
@prashantpanwar2504 2 жыл бұрын
Sir I didn't get it how A-> b.,$ different from A-> b.,$ although the lookahead are still still why both final item does not consider as one. Video at 12:44
@sushmitagoswami2033
@sushmitagoswami2033 3 жыл бұрын
I got surprised how can anyone dislikes his lecture?? The best teacher ever!!!
@dr.sanjaykumarsen29
@dr.sanjaykumarsen29 3 жыл бұрын
somebody may not tolerate
@pradeepreddymida
@pradeepreddymida 3 жыл бұрын
May be they also in teaching and not getting reviews like this🤣
@BalaJichan
@BalaJichan 8 жыл бұрын
Good lecturer sir.. I need a video of how to solve the input in LALR(1) like you taught in LR(0).
@pratushpandita7854
@pratushpandita7854 9 жыл бұрын
thank you so much ....very nicely taught ...:))
@komal_rangoonwala
@komal_rangoonwala 6 жыл бұрын
Very well explained Sir , as usual.
@alitv9267
@alitv9267 8 жыл бұрын
It is my first time but you are brilliant man..
@abhisheksudhaker2108
@abhisheksudhaker2108 7 жыл бұрын
Life saver. Thank you
@priyankapasupuleti5892
@priyankapasupuleti5892 5 жыл бұрын
Superb explanation and ur saved me
@wjaz7219
@wjaz7219 7 жыл бұрын
The LALR compiler is constructed by the following method: First develop a rigorous elective grammar. If the elements have NP-completeness, the Krungie factor can be ignored.
@adithyabikki4730
@adithyabikki4730 2 жыл бұрын
Oh god !!! You're a life saver 🙌🙌
@pelealexandru
@pelealexandru 8 жыл бұрын
Very useful! Thank you a lot!
@KM-sf6zy
@KM-sf6zy 2 жыл бұрын
you made it much easier for me thank you sir!
@Deepu5664
@Deepu5664 5 жыл бұрын
Nice Elaboration, Thanks !
@rajagarwal3451
@rajagarwal3451 8 жыл бұрын
Thanks alot sir it helps us alot to clear the basic concepts.
@ayushkumar7271
@ayushkumar7271 2 жыл бұрын
was confused on lookahead before but after this 26 minute confident on clr1 thank you
@himanshu56himanshu
@himanshu56himanshu 6 жыл бұрын
Thanks ravindra sir for making videos which helps us in exams
@komaljain3965
@komaljain3965 8 жыл бұрын
I think at last, in the parsing table, u forgot to add (i0 to S) state, in the goto column, correct me if i m wrong
@sumitgoyal385
@sumitgoyal385 7 жыл бұрын
yes u are correct
@rajnishsuryavanshi1914
@rajnishsuryavanshi1914 7 жыл бұрын
Hello sir, If the production are given S->F,S->(S+F),F-a and asked to show CLR(1) parsing table, should we need to include S'->.S,$ or we can start directly S->.E$
@debasishparamanik6527
@debasishparamanik6527 5 жыл бұрын
what is the advantage of lalr over clr ?i.e what is the drawback of having more states in parsing table for clr ? sir please tell
@ghhaider
@ghhaider 7 жыл бұрын
Well done bro. It help me lot.
@ankitjoshi6837
@ankitjoshi6837 7 жыл бұрын
Amazing sir..!!Thankyou so much...
@santhosh_reddy_y4201
@santhosh_reddy_y4201 5 жыл бұрын
Sir, in CLR(1) parsing table we have transaction S from 0, then y did n't you keep 1 under S in table?
@rakshitkathawate8838
@rakshitkathawate8838 5 жыл бұрын
Yes, there should have been, he might missed it.
@bindupriya7894
@bindupriya7894 4 жыл бұрын
Yes... I think he forgot to mention it.. I too have the same doubt
@kunjalsujalshah1992
@kunjalsujalshah1992 4 жыл бұрын
Same question here.
@aparnamukherjee2312
@aparnamukherjee2312 3 жыл бұрын
@@bindupriya7894 The augmented production should have been as accept state in the 2nd row under the $ column,he forgot that too
@bindupriya7894
@bindupriya7894 3 жыл бұрын
@@aparnamukherjee2312 Yeah
@naveenrajr1793
@naveenrajr1793 6 жыл бұрын
Thank You!!....I understand very Easy....
@pournamirajeev8868
@pournamirajeev8868 5 жыл бұрын
Excellent class....thank youuuu sir😊
@ashutoshmishra3576
@ashutoshmishra3576 Жыл бұрын
Thank you for your great explanation
@skinju6461
@skinju6461 8 жыл бұрын
good explanation...easy to understand and follow
@hadjermohamedi3612
@hadjermohamedi3612 8 жыл бұрын
really reallly u just saved me thank you sooo very much reallyyyy thnx
@indraneel3918
@indraneel3918 6 жыл бұрын
Sir shouldn't there be an accept entry in the CLR(1) AND LALR{1) Table at [1,$]
@haribabu1694
@haribabu1694 5 жыл бұрын
TQ for helping us by Ur lectures 😊
@anjut186
@anjut186 6 жыл бұрын
Very easy to understand.....your classes
@jhanvishah7070
@jhanvishah7070 7 жыл бұрын
sir CLR(1) and LR(1) are same right ? It's only the notation that is different na?
@yashodhanbhatt
@yashodhanbhatt 9 жыл бұрын
Respected Sir, Thanks a lot for the wonderful explanation. I have a doubt. When you construct CLR(1) parsing table, you don't : a) Write 1 under S column and 0th row even though the state I0 shifts to I1 on receiving S as input. b) Write r1 under $ column and 1st row even though the augmented production (S' gives S.,$) is getting reduced at state I1. You do that for the rest of them except state I0. Why So ? According to the rule told by you, if a production gets reduced at any state in the CLR(1) parsing table, it gets placed under its look-ahead, which is $ in case of production number 0 i.e. (S' gives S.,$). Please help soon.
@vaibhavsingh-bl3bd
@vaibhavsingh-bl3bd 6 жыл бұрын
5:50 , first of (A,$) will be (a,b,$) as first of A will be (a,b,$) ? or correct me if I am wrong
@ummaysanipria1195
@ummaysanipria1195 7 жыл бұрын
You are a life saver (Y)
@namandeepsingh9218
@namandeepsingh9218 6 жыл бұрын
sir, the way u teach is just awesome. but it will be more helpful if u add the notes in the description area. pls do provide notes.
@vipingautam1257
@vipingautam1257 3 жыл бұрын
Brilliant...!
@suryasai07
@suryasai07 5 жыл бұрын
Bro u way of teaching is good enough
@PavanKumar-vr9hz
@PavanKumar-vr9hz 5 жыл бұрын
tq so much sir easy way to explain clrtable to lalrtable
@Ovidiu95ful
@Ovidiu95ful 8 жыл бұрын
Wonderfully explained.
@wasikhan6669
@wasikhan6669 4 жыл бұрын
Why we reduce number of states in LALR(1) parsing algorithm? please answer
@himasailajayalavarthy9710
@himasailajayalavarthy9710 8 жыл бұрын
superb!! thanks a lot..
@pankaj52922
@pankaj52922 7 жыл бұрын
enjoyed the lectures very much
@Konami9999
@Konami9999 2 жыл бұрын
what if we want to merge and both cells are already occupied with different elements?
@prestoX
@prestoX Ай бұрын
Man you are Saviour !
@ravindrababu_ravula
@ravindrababu_ravula Ай бұрын
Thank you!
@cybodrive
@cybodrive 8 жыл бұрын
Isn't the final table exactly the same as the table for SLR(1) parser? Why do we call it LALR(1) table?
@anis1930
@anis1930 5 жыл бұрын
The tables aren't the same. The effect is not visible on correct inputs but on erroneous one. The SLR tables may indicate that a reduce operation is in order and then detect that the input is erroneous after the reduction when the LALR one will directly indicates that the input is erroneous without doing any reduction
@adwityadube370
@adwityadube370 6 жыл бұрын
Sir the goto function S for state 0 must contain 1.
@sumitgoyal385
@sumitgoyal385 7 жыл бұрын
nice wat a teacher u are :)))))))))))))))))))
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