Simplest way to convert infix expression into postfix expression on paper Here is the full playlist: • 1. Stacks Data Structu...
Жүктеу.....
Пікірлер: 820
@Edens2644 ай бұрын
Uploaded 9 years ago, DULL camera, low voice. LEGENDARY.
@disablegos6912
2 ай бұрын
yup bro
@LinkLegend06 жыл бұрын
why can't teachers make it so simple, thanks man, good job, you helped me alot.
@c1d512
4 жыл бұрын
Agreed
@dhruvaagarwal2326
3 жыл бұрын
They teach the same simple way but we don't study that time. We busy that time and in these we study with concentration :)
@SJ-ic4yr
3 жыл бұрын
Dhruva Agarwal 027 true
@shivanshupadhyay7356
3 жыл бұрын
Bcoz they have taken oath
@raunakkumari2394
3 жыл бұрын
Exactly 🙁
@muhammadirfan7940 Жыл бұрын
When I was in class 8 you posted this video, now I am in 8 semester of my CS Engineering and watching for the preparation for tomorrow's final exam. If you got this comment thanks a lot buddy❤
@WOSplays6 жыл бұрын
4 am studying for my CS final and was about to consider not memorizing Infix to Postfix because my professor's explanation is quite confusing. Glad I found this video because I understood so easily. Thanks!
@VarunSrinivas
2 жыл бұрын
Im doing the same thing at 330 AM XD
@SRP47
Жыл бұрын
@@VarunSrinivas 2:20 am ...
@VarunSrinivas
Жыл бұрын
@@SRP47 padh le Bhai cs nhi milegi acchi college me lol jk
@rajKSvines
Жыл бұрын
1.30am
@ss-vc1sc
Жыл бұрын
@@rajKSvines bruhhh
@anesp.a9139 жыл бұрын
Really amazing buddy ... You save my 3 hours ..... Thousands of thanks Anes
@rahulwadhwa04
5 жыл бұрын
Anes P.A what does your name mean
@mayurkalsekar524
5 жыл бұрын
Butthole
@aw44r
4 жыл бұрын
Anus
@romanticdubbingchannel9849
3 жыл бұрын
🙏🙏🙏🙏
@kapilsuthar8693
3 жыл бұрын
And also marks sir ji.
@Dawood_Awan10 ай бұрын
You're a life saver Sir. I was having a difficult time understanding precedence and in which case what should be popped but you made it super easy. I hope you're doing well wherever you are in life. I can't help but be grateful for the wonders you've done. Thank you very much.
@sairamsoundararajan51904 жыл бұрын
Dude, this helped me so much! Props to you! This has really simplified my understanding of how to convert infix to postfix, which might show up on my midterm. Thank you so much!!!
@kallepallideepakkumar6524 жыл бұрын
I saw this video for once and executed the whole code on my own !! That's a great explanation mate.
@naaro_____8 жыл бұрын
Clear, concise, easy to understand the concept and your voice. Thank you for uploading.
@RP0I8 жыл бұрын
Nice work bro, best explanation I've seen/read/heard so far. :)
@TheMangeGrain Жыл бұрын
Thanks ! My new geeky/nerdy hobby is to play with vintage calculators, including RPN ones. This method is fast, easy, algorithmic, efficient, no-arithmetic-tree-required : I love it !
@herzfeld26 жыл бұрын
Great video. Thank you for avoiding specifics, this is concise and simple. A great pre-exam brush-up!
@aryxslayer04
Жыл бұрын
Indians are always helpful
@funnyandcuteanimals3446
2 ай бұрын
@@aryxslayer04 l swear bro you right
@Shadowdoctor1176 жыл бұрын
Thanks for posting! It helped me figure out how to do my programming assignment. Writing it on paper made it clear on how to actually code it
@DavidVCastro Жыл бұрын
I sat through 2.5 hours over two classes and still left befuddled. You cleared it up in under 6 minutes. THANK YOU!!
@Loki-5 жыл бұрын
I always revisit this for a refresher. Perfectly made. Thank you!
@hauteswan25414 жыл бұрын
Better than the others I watched. Thank you sir!
@BallstinkBaron4 жыл бұрын
For those who are confused, the first letter he puts down isn't C, it's a parenthesis, or "bracket".
@rijulshrivastava999
4 жыл бұрын
u are a genius
@shubhamsirothiya2551
3 жыл бұрын
Kamaal ka knowledge hai aapka bhai
@NitinKumar-xx4xh
3 жыл бұрын
@@rijulshrivastava999 still searching who asked
@pranav288
3 жыл бұрын
@@NitinKumar-xx4xh found them ?
@arunaravinder9435
2 жыл бұрын
kzread.info/dash/bejne/mH2I3MqeipDXgLg.html
@Nkprince16087 жыл бұрын
Thanks bhai for making this video... now I can sleep in peace... :-)
@ServicetoProductBasedJourney
6 жыл бұрын
Rip
@anupamjaiswal7714
5 жыл бұрын
Why not rip
@parthajitbarman1640
4 жыл бұрын
padh le bhai
@MereLee9 жыл бұрын
wow that was much easier than I thought !! Thank you for explaining so well !! :D
@Gunzlife0094 жыл бұрын
Thanks a lot man! You made it so easy and simple! Love your video!
@a.bernal21676 жыл бұрын
Thank you! This was way better than what I learned in class.
@OpTimuSSyntaX9 жыл бұрын
You're an amazing teacher. Thanks (Y)
@VikrantSingh-xt4wv5 жыл бұрын
To the point and with a great set of example!!!! Made my day.
@MrDanielishak9 жыл бұрын
Wondefully explained....Now i really understand this....thanks so much.
@gozi3237 жыл бұрын
Thank you so much for explaining this! This is extremely helpful!
@antropovp4 жыл бұрын
Thank you! I couldn't find information on how to handle operators with different priorities, and your video helped.
@justchill5515 жыл бұрын
Ohh Bhai college me Dimag Karab kar Diya tha.. But now I understood Well... Very good Explanation
@sumitrakumariyadav64673 жыл бұрын
Really helped me bro. A big thanks to u U made it so simple to understand . Keep making data structure easier with the help of ur videos.👍👍👍👍
@subhash67065 жыл бұрын
Really thanks a lot bro You saved my time Keep on going
@harinisri29624 жыл бұрын
Wow well explained! Thank you so much! It was really helpful!
@sumitkumarsingh5094 жыл бұрын
Rules>> 1)If the newer operation has higher priority then only it gets to stay in the stack column. 2)For checking priority we go only till '(', hence this means '*(-' is a valid entry in stack column on the entry of '-' -comment if I am wrong!
@sameirali59464 жыл бұрын
You are the GOAT my dude, just what i needed
@saitejarangi32219 жыл бұрын
thanks a lot buddy.for explaining it so simply.
@orionstech14769 ай бұрын
Easy to understand the concept. The video really helped me...... After all a big thankz🎉
@aaryanm83184 жыл бұрын
The hero we deserve👏🏻👏🏻good job mate
@tanayganguly12516 жыл бұрын
Love you man..... Love you .... Such a good video.... Keep it up man... You don't know how happy I am to understand it at last
@mdsahadat7852 Жыл бұрын
The way you made it simple and delivered is awesome 👍👍
@user-pg6bn6sx1f5 жыл бұрын
Thank you so muchhhh!!! That really helped... Now I m crystal clear😍😍😍
@soubhikmondal80887 жыл бұрын
thank you very much it just saved me before my computer board exam very wonderfully explained 😊
@darellldark7 жыл бұрын
Thank you very much, dude! You're easily explain how it works!
@amanueltemesgen9044Ай бұрын
Don't judge a book by its cover; the best explanations often lie beneath the surface.
@ayushisingh72656 жыл бұрын
Help ful.... Vrna fir teacher se pucna pdta... Or vir vo cillate.. Thanks bhaii
@kapilsuthar86933 жыл бұрын
Ab aaya samaj me sirji mai e first ek ma'am ki video dekhi thi thoda last me confusion ho gya tha unka bhi tarika sahi thaa but aapke video se really samaj aa gya achche se👍
@ovileenadas9856 жыл бұрын
The video was pretty well made. Thanks. Helped a lot as I have my exams in a week. Also I wanted to ask what happens when there are two same operators one after the other?
@samitkhanal17374 жыл бұрын
best example for this conversion as it cover different 3 problem at a time . BY solving this question u can solve any question without confusion ....thank you for this video.
@our.moments8 жыл бұрын
Thanks dude! 5mins video....infix to postfix problem solved for lifetime.. :D
@melogged42599 жыл бұрын
Amazing video taught me for sure....... Got my exams tom indeed very handy tutorial
@mishraviews38875 жыл бұрын
It helped me to understand data structures in stack easily
@ramlaxman50849 жыл бұрын
it is truly a comendable video.....thanks man!!
@alhanoufalkadi24354 жыл бұрын
What about if we have two smae operators for exapmle ^^ in the stack, how can we manipulate it ?
@bmohitha98 жыл бұрын
ITS REALLY VERY GOOD THE BEST EXPLANATION I HAVE EVER HEARD
@Aliel0108 жыл бұрын
Very well explained, I like that you went straight to the point.
@souravsahoo15824 жыл бұрын
are bhai kamal kar diya,really thanks to you from my heart,this thing stuck in my throat ,now it is clear.
@Valvax45006 жыл бұрын
amazing video man! thanks alot you just saved me hours of trying to understand the text i have !
@stevenisonline6 жыл бұрын
Excellent simple visualization! Thank you!
@elle45567 жыл бұрын
This is so far the best explanation I have ever received! Thanks! Thanks a tonne Bro. 😊
@karankapur2245
7 жыл бұрын
I have a question its really serious ... Why did you brozone him ... he did you a favour and you do this to him Clearly shame on you
@tuanhvu70364 жыл бұрын
Quick and easy explanation. Thanks a lot !!!
@shivamrajsingh0012 жыл бұрын
Master log bas chije gumate hai. Direct concept nahi btate. And this man here is directly giving the concept which makes him different from others. Hats off dude
@SingerVinodBoya9 жыл бұрын
Thank you so much sir understood greatly
@baroncorbin72165 жыл бұрын
A very nice explanation bro ... U deserve more subs... Who the hell disliked this video ????????
@kondaveetiprasastha Жыл бұрын
Having DS exam today.This clarified my doubts
@deepakkr.mishra33978 жыл бұрын
much easier than I thought.... thnks dude :)
@biswanathbanik
5 жыл бұрын
Priority checking is wrong we can put * after /
@uzmafarooqui166 жыл бұрын
Thnx a lot bro 😘💜.my best wishes is with you
@pranitajoshi99366 жыл бұрын
Very simple & straightforward explanation 👍🏻 tysm
@sourabh44395 жыл бұрын
bro you made it very simple.............. thanks a lot today is my board exam........ wish me luck................
@AnhNguyen-tv9jf4 жыл бұрын
THANK YOU!!!! You literally just saved my life as a college student TT^TT
@Nolanfan_02 Жыл бұрын
Bro thank you so much,Had an exam this morning and it could really help me
@rahulkumarshaw57395 жыл бұрын
Thank you so much yaar. You are a best teacher 👌
@jushas92765 жыл бұрын
thank u so much for this clear explaination
@yashmaroo58556 жыл бұрын
Nice one sir .Just helped me a lot before my computer board exams
@amritavarshini18817 жыл бұрын
good explanation.Understood the concept clearly.Thank you
@Maha.salim15 жыл бұрын
Thanks for the clear explanation 🙏🏼💕
@MakTony6 жыл бұрын
Good stuff, got a computer science final coming up :)
@ShubhamGupta-wq3po5 жыл бұрын
If there are more than one operator b/w () in stack Like (+*) then how pop operation would be, in what order?
@__bohemia__78925 жыл бұрын
Thanks bro tomorrow is my preboard This concept was troubling me a lot
@DhananjaySingh-oh2ct9 жыл бұрын
thanku so much bro ..awesome..keep going on uploading ...and we will keep watching on.....
@adithiyagurupatham32555 жыл бұрын
It was really easy to understand.Thanks a lot.You owe a lot!!!!!!!!!!
@toxicluna27265 жыл бұрын
Last moment learning made easy .. Thanks!!!!! Will recommend to all
@shivankitss8396
5 жыл бұрын
Same :-)
@48_igustibagussuthaarianat29 Жыл бұрын
Thank you very much, much simpler than i thought
@vivlodia4 жыл бұрын
damn this is explained really well, thanks!
@harshita29302 жыл бұрын
Thanku so Much sir ..U nailed it..I'm gonna have DS exam tomorrow..Greetings🤗
@rajat43525 жыл бұрын
Awesome video and nice way of explanation. No words to say bro !
@gnasamx7 жыл бұрын
your example was good,covering all conditions in it.
@anishroy88053 жыл бұрын
Thanks bro, see how in such a simple way u taught us the whole thing:)
@AyukaXD4 жыл бұрын
Thank you ! It helped me a lot. It was more straightforward and clear than in my class. Now i am just wondering why i did not understand it at first. ^^"
@_towards_destination3 жыл бұрын
Its 2:38 am and tomorrow in the morning 9:am I have my mid meanwhile me doing preparation 🤣
@batlin7
2 жыл бұрын
Same situation bro 😂
@basicknowledge6139
2 ай бұрын
Me2
@techtravel32246 жыл бұрын
Your video is perfect then other infix to postfix videoa... Thanks bro
@revanthgokeda61115 жыл бұрын
Thanks bro .. u'r explaination is really awesome
@Pix3lB3 жыл бұрын
Exam in an hour, this helped thank you.
@ayanpatel_988 жыл бұрын
Bro you explain nice. My all doubts have been cleared.
@ayushpatnaik8 жыл бұрын
Brilliant. I watched many other videos but none of them explained so well.
@rekhanirob1558
Жыл бұрын
b
@satyapalsingh9766 жыл бұрын
thank u very much,well explained,now got some confidence
@aasthaagrawal4691 Жыл бұрын
Perfect example. Thank you so much. It was indeed very easy explanation.
@tanvingowda86943 жыл бұрын
Omg! u explained so clearly in 5 minutes thank u so much sir
@kunalpandey71897 жыл бұрын
very good and clear explanation.............now i can do every question easily!!THANkS
@moviebaaz007 Жыл бұрын
thanks a lot man.tommorow is my exam and i think your video will help me in getting 10 marks in just 2 minutes.thanks a lot bro
@indronil79963 жыл бұрын
It was very clear Thank you Great day ahead
@aliced.scarlet85552 жыл бұрын
You teach very well, thanks a lot ❤
@suruchisarkar88715 жыл бұрын
awesome...I worked on it for an hour still I did not get it..now after watching this video I am clear about this concept...awesome...sometimes videos are really helpful than textbook
@vinaybankapur62575 жыл бұрын
Thank u bro u r teaching skilll is nice.....Now i understand how to evaluate infix expression
Пікірлер: 820
Uploaded 9 years ago, DULL camera, low voice. LEGENDARY.
@disablegos6912
2 ай бұрын
yup bro
why can't teachers make it so simple, thanks man, good job, you helped me alot.
@c1d512
4 жыл бұрын
Agreed
@dhruvaagarwal2326
3 жыл бұрын
They teach the same simple way but we don't study that time. We busy that time and in these we study with concentration :)
@SJ-ic4yr
3 жыл бұрын
Dhruva Agarwal 027 true
@shivanshupadhyay7356
3 жыл бұрын
Bcoz they have taken oath
@raunakkumari2394
3 жыл бұрын
Exactly 🙁
When I was in class 8 you posted this video, now I am in 8 semester of my CS Engineering and watching for the preparation for tomorrow's final exam. If you got this comment thanks a lot buddy❤
4 am studying for my CS final and was about to consider not memorizing Infix to Postfix because my professor's explanation is quite confusing. Glad I found this video because I understood so easily. Thanks!
@VarunSrinivas
2 жыл бұрын
Im doing the same thing at 330 AM XD
@SRP47
Жыл бұрын
@@VarunSrinivas 2:20 am ...
@VarunSrinivas
Жыл бұрын
@@SRP47 padh le Bhai cs nhi milegi acchi college me lol jk
@rajKSvines
Жыл бұрын
1.30am
@ss-vc1sc
Жыл бұрын
@@rajKSvines bruhhh
Really amazing buddy ... You save my 3 hours ..... Thousands of thanks Anes
@rahulwadhwa04
5 жыл бұрын
Anes P.A what does your name mean
@mayurkalsekar524
5 жыл бұрын
Butthole
@aw44r
4 жыл бұрын
Anus
@romanticdubbingchannel9849
3 жыл бұрын
🙏🙏🙏🙏
@kapilsuthar8693
3 жыл бұрын
And also marks sir ji.
You're a life saver Sir. I was having a difficult time understanding precedence and in which case what should be popped but you made it super easy. I hope you're doing well wherever you are in life. I can't help but be grateful for the wonders you've done. Thank you very much.
Dude, this helped me so much! Props to you! This has really simplified my understanding of how to convert infix to postfix, which might show up on my midterm. Thank you so much!!!
I saw this video for once and executed the whole code on my own !! That's a great explanation mate.
Clear, concise, easy to understand the concept and your voice. Thank you for uploading.
Nice work bro, best explanation I've seen/read/heard so far. :)
Thanks ! My new geeky/nerdy hobby is to play with vintage calculators, including RPN ones. This method is fast, easy, algorithmic, efficient, no-arithmetic-tree-required : I love it !
Great video. Thank you for avoiding specifics, this is concise and simple. A great pre-exam brush-up!
@aryxslayer04
Жыл бұрын
Indians are always helpful
@funnyandcuteanimals3446
2 ай бұрын
@@aryxslayer04 l swear bro you right
Thanks for posting! It helped me figure out how to do my programming assignment. Writing it on paper made it clear on how to actually code it
I sat through 2.5 hours over two classes and still left befuddled. You cleared it up in under 6 minutes. THANK YOU!!
I always revisit this for a refresher. Perfectly made. Thank you!
Better than the others I watched. Thank you sir!
For those who are confused, the first letter he puts down isn't C, it's a parenthesis, or "bracket".
@rijulshrivastava999
4 жыл бұрын
u are a genius
@shubhamsirothiya2551
3 жыл бұрын
Kamaal ka knowledge hai aapka bhai
@NitinKumar-xx4xh
3 жыл бұрын
@@rijulshrivastava999 still searching who asked
@pranav288
3 жыл бұрын
@@NitinKumar-xx4xh found them ?
@arunaravinder9435
2 жыл бұрын
kzread.info/dash/bejne/mH2I3MqeipDXgLg.html
Thanks bhai for making this video... now I can sleep in peace... :-)
@ServicetoProductBasedJourney
6 жыл бұрын
Rip
@anupamjaiswal7714
5 жыл бұрын
Why not rip
@parthajitbarman1640
4 жыл бұрын
padh le bhai
wow that was much easier than I thought !! Thank you for explaining so well !! :D
Thanks a lot man! You made it so easy and simple! Love your video!
Thank you! This was way better than what I learned in class.
You're an amazing teacher. Thanks (Y)
To the point and with a great set of example!!!! Made my day.
Wondefully explained....Now i really understand this....thanks so much.
Thank you so much for explaining this! This is extremely helpful!
Thank you! I couldn't find information on how to handle operators with different priorities, and your video helped.
Ohh Bhai college me Dimag Karab kar Diya tha.. But now I understood Well... Very good Explanation
Really helped me bro. A big thanks to u U made it so simple to understand . Keep making data structure easier with the help of ur videos.👍👍👍👍
Really thanks a lot bro You saved my time Keep on going
Wow well explained! Thank you so much! It was really helpful!
Rules>> 1)If the newer operation has higher priority then only it gets to stay in the stack column. 2)For checking priority we go only till '(', hence this means '*(-' is a valid entry in stack column on the entry of '-' -comment if I am wrong!
You are the GOAT my dude, just what i needed
thanks a lot buddy.for explaining it so simply.
Easy to understand the concept. The video really helped me...... After all a big thankz🎉
The hero we deserve👏🏻👏🏻good job mate
Love you man..... Love you .... Such a good video.... Keep it up man... You don't know how happy I am to understand it at last
The way you made it simple and delivered is awesome 👍👍
Thank you so muchhhh!!! That really helped... Now I m crystal clear😍😍😍
thank you very much it just saved me before my computer board exam very wonderfully explained 😊
Thank you very much, dude! You're easily explain how it works!
Don't judge a book by its cover; the best explanations often lie beneath the surface.
Help ful.... Vrna fir teacher se pucna pdta... Or vir vo cillate.. Thanks bhaii
Ab aaya samaj me sirji mai e first ek ma'am ki video dekhi thi thoda last me confusion ho gya tha unka bhi tarika sahi thaa but aapke video se really samaj aa gya achche se👍
The video was pretty well made. Thanks. Helped a lot as I have my exams in a week. Also I wanted to ask what happens when there are two same operators one after the other?
best example for this conversion as it cover different 3 problem at a time . BY solving this question u can solve any question without confusion ....thank you for this video.
Thanks dude! 5mins video....infix to postfix problem solved for lifetime.. :D
Amazing video taught me for sure....... Got my exams tom indeed very handy tutorial
It helped me to understand data structures in stack easily
it is truly a comendable video.....thanks man!!
What about if we have two smae operators for exapmle ^^ in the stack, how can we manipulate it ?
ITS REALLY VERY GOOD THE BEST EXPLANATION I HAVE EVER HEARD
Very well explained, I like that you went straight to the point.
are bhai kamal kar diya,really thanks to you from my heart,this thing stuck in my throat ,now it is clear.
amazing video man! thanks alot you just saved me hours of trying to understand the text i have !
Excellent simple visualization! Thank you!
This is so far the best explanation I have ever received! Thanks! Thanks a tonne Bro. 😊
@karankapur2245
7 жыл бұрын
I have a question its really serious ... Why did you brozone him ... he did you a favour and you do this to him Clearly shame on you
Quick and easy explanation. Thanks a lot !!!
Master log bas chije gumate hai. Direct concept nahi btate. And this man here is directly giving the concept which makes him different from others. Hats off dude
Thank you so much sir understood greatly
A very nice explanation bro ... U deserve more subs... Who the hell disliked this video ????????
Having DS exam today.This clarified my doubts
much easier than I thought.... thnks dude :)
@biswanathbanik
5 жыл бұрын
Priority checking is wrong we can put * after /
Thnx a lot bro 😘💜.my best wishes is with you
Very simple & straightforward explanation 👍🏻 tysm
bro you made it very simple.............. thanks a lot today is my board exam........ wish me luck................
THANK YOU!!!! You literally just saved my life as a college student TT^TT
Bro thank you so much,Had an exam this morning and it could really help me
Thank you so much yaar. You are a best teacher 👌
thank u so much for this clear explaination
Nice one sir .Just helped me a lot before my computer board exams
good explanation.Understood the concept clearly.Thank you
Thanks for the clear explanation 🙏🏼💕
Good stuff, got a computer science final coming up :)
If there are more than one operator b/w () in stack Like (+*) then how pop operation would be, in what order?
Thanks bro tomorrow is my preboard This concept was troubling me a lot
thanku so much bro ..awesome..keep going on uploading ...and we will keep watching on.....
It was really easy to understand.Thanks a lot.You owe a lot!!!!!!!!!!
Last moment learning made easy .. Thanks!!!!! Will recommend to all
@shivankitss8396
5 жыл бұрын
Same :-)
Thank you very much, much simpler than i thought
damn this is explained really well, thanks!
Thanku so Much sir ..U nailed it..I'm gonna have DS exam tomorrow..Greetings🤗
Awesome video and nice way of explanation. No words to say bro !
your example was good,covering all conditions in it.
Thanks bro, see how in such a simple way u taught us the whole thing:)
Thank you ! It helped me a lot. It was more straightforward and clear than in my class. Now i am just wondering why i did not understand it at first. ^^"
Its 2:38 am and tomorrow in the morning 9:am I have my mid meanwhile me doing preparation 🤣
@batlin7
2 жыл бұрын
Same situation bro 😂
@basicknowledge6139
2 ай бұрын
Me2
Your video is perfect then other infix to postfix videoa... Thanks bro
Thanks bro .. u'r explaination is really awesome
Exam in an hour, this helped thank you.
Bro you explain nice. My all doubts have been cleared.
Brilliant. I watched many other videos but none of them explained so well.
@rekhanirob1558
Жыл бұрын
b
thank u very much,well explained,now got some confidence
Perfect example. Thank you so much. It was indeed very easy explanation.
Omg! u explained so clearly in 5 minutes thank u so much sir
very good and clear explanation.............now i can do every question easily!!THANkS
thanks a lot man.tommorow is my exam and i think your video will help me in getting 10 marks in just 2 minutes.thanks a lot bro
It was very clear Thank you Great day ahead
You teach very well, thanks a lot ❤
awesome...I worked on it for an hour still I did not get it..now after watching this video I am clear about this concept...awesome...sometimes videos are really helpful than textbook
Thank u bro u r teaching skilll is nice.....Now i understand how to evaluate infix expression