Simplification of CFG | Context Free Grammar | Compiler Design

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For complete Compiler Design, check out this video: ruclips.net/video/OQCjakjCJu4/видео.html

[@adityaralhan1154]

17:53
ans is:-
S->aA|a
A->aaA|aa
therefore-c)4
Thanks for the lecture sir

[@vandnagureja3]

Sir, there may be many intellectuals but your way of building concept is praiseworthy.

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[@souravsaini2187]

17:23 pe jb apne S production me aaa add kia h uske place pe a ayega kyunki hme vahan aa nhi place krna hme vahan null replace krna h

[@rahiljakir]

correct

[@Jogsgarden]

correct, otherwise we can not generate 'a' which was possible by the same grammar before removal of null production.

[@devanshurawat826]

c) 3 steps
Null removal
Unit production removal
Useless production removal

[@kathanparekh6135]

18:25 Padhai k Video aise h khojaya karti hai is right 💯💯💯
aur yaaha to koi ladka gali de de aur ladki kamar matka de to trending ho jati hai video. Kisiko padhna nai hai sabko bas nautanki hi dekhni hai...
I respect your work sir. Hats Off to you sir ...
I'll support you...

[@NeerajHSingh]

Sir ek correction h . 17:55 pr s->aA/a hoga aaa nhi nhi to language "a" derive nhi kr payegi

[@oneshotstudy4303]

Same 😁 here mene bhi comment check Kiya ki mene hi notice Kiya ya ye sir se mistake ho gayi hai 😄

[@ankitmishra697]

@@oneshotstudy4303 same question bro

[@samarthtandale9121]

Sir, at 17:45, the symbol S can also generate string 'a' as A can be lambda as well...

[@tusharkulkarni8742]

bro before that we eliminated lambda from A.

[@samarthtandale9121]

@@tusharkulkarni8742 Bro, to compensate for that we have to ad 'a' in S ... because the Grammar before and after elimination will generate the same language na !

[@humaneBicycle]

yes the corrent ans would be
S->a/aA
A->aaA/aa

[@rohantandale3419]

true@@humaneBicycle

[@gauravsingh8173]

@humaneBicycle correct. There has been slight error from sir

[@OmkarBcw]

Sir the way you teach is awesome
Thanks Sirji....

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[@vanshmalhotra6430]

17:09 When we replaced aBB with lambda how we got aaa instead of a?

[@ilihaspatel399]

yes that is mistake i also got a

[@tusharkulkarni8742]

Bro after removal of null production we got value of A as aa then we replaced that aa with A in aA thats why we got aaa.

[@gourimmenon2726]

@@tusharkulkarni8742 but that's not what we do....we replace A with lambda everywhere to cancel out the effect of removing that null production....so it should be a rather than aaa right

[@manasraikaushik864]

There should also bhi single a remains after putting value of A to null in S ?

[@30-csejayamahotkar30]

Thanks sir mujhe kahi s smjh nhi aa rha tha ye but apne bht acche se samjhaya thank you so much

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[@aayushisharma7742]

​@@KNOWLEDGEGATE_kg xc

[@vikramverma2152]

Sir kuch na samajh nhi aa rha

[@rahulrai1530]

​@@vikramverma2152Skill issue bro

[@smit1044]

​@@rahulrai1530kya skill issu thoda kat Diya value layenge par kahase laye kaise Kiya vo kahi bataya

[@nareshdhakad5883]

❤❤option c is the right option because of the 1. Remove useless production , 2. Unit production and third is null production ❤❤

[@tannuchauhan326]

Option C - Three steps
Thanks a lot sir ❤❤

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[@YASHPAL-qb9sn]

Yes you are right

[@ankitmehta4133]

You are right, padhai ki koi video kabhi trending me nhi aati,

[@rahulgiri627]

Thank you sir for this concept lecture

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[@AmazingVideoGaming]

Awesome explanation

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[@erkamalbajpai8372]

Very nice sir❤❤

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[@erkamalbajpai8372]

Sure sir🙏🙏

[@pranav1718]

Thanks a lot sir 😊🙏✨

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[@ankitmishra697]

Thankyou so much sir all doubt is clear with concept

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Glad to know that, Ankit. Keep learning & following for more content🙂

[@Honey_Goyal]

Sir Maja aa gya aapse padta rha to back to kabhi lagegi hi nhi😅

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[@millionmistakesG99]

At 18:09 sir ne answer bata diya (3)

[@soumyadeepbarik5711]

3 steps must be needed 1. for elemination of epsilon production , 2. elimination of unit production
3. elimination of useless function.

[@RailExpressbyPreetam]

thank you so much sir , well explained

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[@daSPacito666]

Thank you sir

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[@pawanpt2682]

S->AB/a
A->Bc/b
B->aB/c
C->aC/B sir after elimination useless production what will be the resultant gram?

[@suman0332]

From 18:20 heart touching ❤😢

[@arshadv.ansari246]

Thanks a TON Sir.🌟

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[@39.parteekkumar77]

Great video!!

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[@Crafteruru]

Thanku so much sir, thanks a ton for uploading this.

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[@ankitmishra697]

S-> aA
A-> aaA | epsilon
isi me confusion ho gya sir
S-> aA | a
A -> aaA | aa
and thankyou so much isr

[@3024_SahilThite]

Sir, at 17:45, i guess the answer sould be
S --> aA / a
A --> aaA / aa
because the grammar should also generate a string "a"

[@dkcodecamp1892]

Thanks sir

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[@VickyKumar-yd8od]

Ans is at 18:09

[@Cyborgbhaiya]

Nice Videos sir !!

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[@rushalithorat2865]

example of Null production
1) S---AbB
A---a| epsilon
B---B|epsilon
Ans:-
when , A---epsilon:-
S---AbB|bB
A---a
B---b | epsilon
When , B---epsilon
S---AbB|bB|Ab|b
A---a | epsilon
B---b
Is This correst answer sir...plz reply

[@khushiprajapati1939]

I guess ok
Q)
S->AbB
A->a/ epsilon
B-> b/ epsilon
Final answer
S -> AbB/ bB/ Ab/ b
A-> a
B-> b

[@rushalithorat2865]

@@khushiprajapati1939 thanks dear

[@ratneshsiddha88]

sir anand aagya

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[@dancingdemon6173]

thanks a lot sir

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[@17-ashitoshjagtap41]

3 steps are required to help the simplification of grammer

[@shaktivedantasingh2903]

Option C - Three steps

[@Deepak-e2f2h]

Good evening sir

[@HARSH-uh9nc]

Homework question:- option C

[@soumyadeepbarik5711]

The ANSWER of the HOME-WORK QUESTION is 4
1.REMOVAL OF LEFT-RECURSION
2.REMOVAL OF NULL-PRODUCTION
3.REMOVAL OF UNIT-PRODUCTION
4. REMOVAL OF UNNECESSARY SYMBOLS.

[@41_ZakiKhan]

Le lo sir engagement ❣️😂

[@dillusion8588]

Correction in the practice ans:
S->a/aA
A->aaA/aa

[@NoFormalities-y1k]

in the last question , s -> a/aaa/aA . but sir have not taken a , can anyone explain? why!

[@zeedan1943]

no need to derive aaa as it will get derived either way so the answer should be S-> aA/a and A->aaA/aa

[@NoFormalities-y1k]

@@zeedan1943 bhai ab to sab bhool gya , exams khtm ho gye 😅

[@zeedan1943]

@@NoFormalities-y1k sad mere kal hai isiliye padh raha XD

[@NoFormalities-y1k]

@@zeedan1943 best wishes xD

[@namandeep4332]

removal of unit prod., null prod.and use less symbol that is 3 steps.

[@jisouu2985]

sir GNF?

[@BG-lj6fw]

great!!!

[@KNOWLEDGEGATE_kg]

Thank you, keep learning👍😊

[@AditiVerma825]

Option C

[@anansari1808]

thanks sir

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[@Redhuji653]

Option c

[@pawanpt2682]

3 steps

[@zeeeshanmughalmughal6105]

Answer is 3

[@monikajoshi3074]

Sir last me sirf a hi aayega aaa nahi aayega

[@anandsagar4646]

Answer is 3

[@RukhsarMurtaza]

C: 3

[@palworld_gaming]

5

[@adishukla7386]

3 Step

[@muhammadumairshaikh4971]

3 steps

[@sidharthkumthekar3179]

C

[@SAGHEERABBAS-j3v]

3😊

[@royalgirl2837]

Three

[@muhammadumairshaikh4971]

jai hind

[@krsnabantai]

3

[@pawanpt2682]

3

[@abhisheksutar344]

3

[@muhammadumairshaikh4971]

baharat mata ki jai

[@cp65143]

🧑‍🏫🧑‍🏫

[@raghavmanish24]

thanku sir

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[@AnuKumari-qc7ye]

Thanku sir 😊

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[@muhammadsalman9914]

Thank you Sir

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3

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3

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3

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3

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3

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3

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3

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3

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3

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3

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3

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