Evaluation of Postfix Expression | Examples | Data Structures | Lec-20 | Bhanu Priya

Example on evaluation of postfix expression using stack

[@owencf]

THIS IS THE BEST EXPLANATION YOU WILL FIND ON POSTFIX EVALUATION ON THE ENTIRITY OF THE WORLD WIDE WEB THANK YOU MADAME YOU ARE A LEGEND

[@sijo3751]

Yes

[@subhamchowdhury619]

1 hr before exam 💀

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for giving the easiest method of it...

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[@shivanishrivastav8630]

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[@aravindpradeep1265]

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[@saptarshichattopadhyay8234]

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[@174priyanshushekhar2]

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[@quick_melt_down]

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[@_AM_89]

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[@melodymastro13]

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[@mahithaamara9279]

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Tnx mam

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[@AyaannaAbdullahi-bs1ty]

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[@misbakhanum433]

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[@ashwinitambole582]

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[@mahezahara2651]

thank you mam

[@CountMordecai]

Very nice explanation

[@ramankr0022]

3:26 if we take out first two elements.. shouldnt it be 4/12 instead of 12/4 ? thanks for the video.

[@priyalsarda9470]

No. The top element goes after the operator and next popped one goes on left of operator

[@maitriyeeray]

Thankyou ❤️

[@Jessica-kc7tt]

thank you!

[@rajiyashaik6123]

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Tq Yaar...

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[@AnkitKumar-ue3rr]

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[@NoobSaibot123]

can i use this example for my ppt for : Postfix example in stack (Data structure) ?

[@elliotho3015]

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[@sejalyadav2216]

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[@cr7messy22]

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[@codeunity07]

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[@mrgamer.5234]

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[@gangstergaming1990]

Wohoo

[@harshalparekh6452]

in the last (-) operator, shouldn't it be 3 - 40 instead of 40 - 3 ? at Time 3:40

[@venkateshvenky2880]

no

[@Sunder_Verma]

No, like it's 12/4 not 4/12.

[@polkingyt6066]

Of there is plus in 2 nd place what to do

[@amit80086]

Mam why shouldn't it be 4/12....in place of 12/4 at 3:41 .....this problem is faced in division and subtraction

[@kingofshadow8222]

I agree with you please maam tell us!

[@sidharthsinghania5931]

Keep it as simple as possible, 4 /12 will give output in Decimal so 12 /4 and there's no problem in doing it.

[@sidharthsinghania5931]

And btw first operand pushed in stack will be operated with the operand on the top of the stack so first 12 was pushed then 4 was at the top of the stack so 12 /4. If 4 was pushed 1st and 12 would be at the top then I believe that would have happened the case you mentioned above

[@pavankalyan1960]

Mam in the stack you placed 40,12,4 and as per the next operator / we have divided 12/4 which is divisible. What should we do if we get a non divisible number

[@UrvashiJoshi975]

May be we’ll ignore the decimal part

[@zebakarpude4250]

Thnx

[@sangeethasambath2861]

Mam if we divide 4 by 12 the answer changes know mam??? How r u saying that 12 is divided by 4

[@kakarlahemalatha6930]

Tq mam

[@saahithreddy3031]

tq aunty

[@aadhithyaarun5605]

Mam i have a doubt.. When dividing the top most values 4&12 it has to be done as 4/12 or 12 /4 which one is correct?

[@szehaohar]

this confuse me tooo

[@shivaprasadsubedi]

If it’s evaluating prefix expression then u do 4/12, but while evaluating postfix expression u do 12/4.
For prefix the order is (1st top element-operator-2nd top element)
For postfix the order is(2nd top element-operator-1st top element)

[@krithikar.g2364]

12/4 because 4 is top value with that you have divided 12

[@hazem8278]

thanks

[@SalmanKhan-bt4no]

great

[@narein2372]

what to if $ symbol is given

[@futurehokage8673]

what about the precedence? Didn't we have to evaluate / and * first???

[@oanitha8119]

Mam only this numbers are used but any numbers we used this expression

[@StorySorcerers]

What to do when there is dollar symbol

[@kong9748]

Thank

[@pramodohdar4564]

Nice mam

[@dangerstn8302]

Develop and Show the Simulation Using Stack for Evaluating of the Following Expression 12+3*14-(5*16)+7.
Please answer akka...

[@safeerahmedx11]

What if $ is used