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Yeah I will upload all of them...p22 today, 23 tomorrow

What do you think about the video length...it's too long or ok? And do you watch it sped up? I'm just curious if people actually sit through the whole video...or if most people get bored and turn off after 5 minutes lol

@@PseudocodePronot long sir , when you explain for longer period , we can ( understand ) not only for the sake of watching , thank you for your work 🙏🏽 , may god bless you

@@julien_mu8733 I'm glad it's useful then :)

They used 6 loops, but my solution just used 4 - I handled finding the max points inside the input loop, rather than creating another loop to do that. And then outputting the winners can be found just by looping through the whole array and outputting any teams who have a points score equal to the max points What they are doing with that TieIndex array is unnecessary and overly complex in my opinion - there are obviously multiple ways to solve the problem, so the answer doesn't have to be exactly the same as the mark scheme. In fact, in the past, there have been quite a few mark schemes with code that has various runtime or logic errors...so the ms just offers one solution, though there are of course others

glad it's useful - and good luck for your exam :)

just made that today - i will upload paper 13 and 21 tomorrow...and 22 & 23 the next day :)

just uploaded: ruclips.net/video/ZfP_DKRrqvM/видео.html

My result of IGCSE came and I got ---- in computer science you guess the grade and then I will comment on your comment for my grade.

@@chills5100 Hmm, well the fact you are here means you seem happy with your grade...so I will guess an A?

@@PseudocodePro yes

@@chills5100 Good job! So will you do AS computer science too or not?

@@PseudocodePro First when I went to As campus to register my subjects back in July I had picked maths/chemistry and computers but now I am thinking of either leaving computer science and adding chemistry or continuing computer science. I got A in both component of computer science so my programming is not weak but I feel some chapters of computer science o level to be hard one of those being software and second being learning how input and input devices work to a high detail.

Yes, the site was developed based on the official Cambridge pseudocode guide (make sure you select the right syllabus option on the site - A Level or IGCSE/O-Level)

Do you mean upload the code? It's on my site: //stuff pre-defined by cambridge CONSTANT NumRows <-- 10 CONSTANT NumColumns <-- 20 DECLARE Evening : ARRAY[1:NumRows, 1:NumColumns] OF BOOLEAN FOR row <-- 1 TO NumRows FOR col <-- 1 TO NumColumns Evening[row, col] <-- FALSE NEXT col NEXT row //Your code here: CONSTANT TotalSeatsAvailable <-- 200 DECLARE MenuChoice, NumSeatsBooked, NumSeatsToBook, TotalSeats : INTEGER NumSeatsBooked <-- 0 FOR row <-- 1 TO NumRows FOR col <-- 1 TO NumColumns IF Evening[row, col] = TRUE THEN NumSeatsBooked <-- NumSeatsBooked + 1 ENDIF NEXT col NEXT row OUTPUT "" REPEAT OUTPUT "--- Theatre Booking App --- 1) Make Booking 2) Exit" INPUT MenuChoice IF MenuChoice = 1 THEN REPEAT OUTPUT "Enter number of seats to book:" INPUT NumSeatsToBook UNTIL NumSeatsToBook >= 1 AND NumSeatsToBook <= 4 IF NumSeatsBooked + NumSeatsToBook <= TotalSeatsAvailable THEN FOR seat <-- 1 TO NumSeatsToBook DECLARE seatRow, seatCol, seatNum : INTEGER seatNum <-- NumSeatsBooked + seat seatRow <-- DIV(seatNum - 1, NumColumns) + 1 seatCol <-- MOD(seatNum - 1, NumColumns) + 1 Evening[seatRow, seatCol] <-- TRUE OUTPUT "Booked Seat: row ", seatRow, ", col", seatCol NEXT seat NumSeatsBooked <-- NumSeatsBooked + NumSeatsToBook ELSE IF NumSeatsBooked = TotalSeatsAvailable THEN OUTPUT "House full" ELSE OUTPUT "Can't book ", NumSeatsToBook, " - only ", (TotalSeatsAvailable - NumSeatsBooked), " available" ENDIF ENDIF CALL ShowBookings() ENDIF UNTIL MenuChoice = 2 //extra procedure - not required for question, just makes it easy for us to visualise PROCEDURE ShowBookings() DECLARE line : STRING FOR row <-- 1 TO NumRows line <-- "" FOR col <-- 1 TO NumColumns IF Evening[row, col] = TRUE THEN line <-- line & '🟩' ELSE line <-- line & '⬛' ENDIF NEXT col OUTPUT line NEXT row ENDPROCEDURE

Both

I hope you got - let me know your result when you get it. Good luck!

@@PseudocodePro I will !

good luck :)

@@PseudocodePro hey man thank you so much for your videos, I found it the day before my exam but still it helped me so much. more power to you 💪🙏

Hey bro what grade did u get,I'm curious

@@GojoSaturoHonored1 *

do you know what they do - DIV returns the number of times you can wholly divide a number by another...and MOD returns the remainder from that division e.g. if you have 10 slices of pizza and 3 people DIV(10, 3) = 3 - this is saying each person gets 3 slices of pizza MOD(10, 3) = 1 - this is saying there is one slice of pizza remaining

Do you mean in the ELSE statement...or when calling GetStart(2)? All the code is uploaded as solutions on the specific exam question page on my site now - so you can easily test the code from these videos out there. Maybe it might help

You're right...nothing can compare to that But anyway, you're in A2...you can ignore SQL anyway

Thanks - I work on the site daily, so don't have much time...but there are a number of other channels for past papers :)

Glad it's useful - make sure to see if you can apply this knowledge then, by trying the 15 mark questions etc (I have the starter code on my site)

Yes, you are right...I said area, but forgot to change the variable after copying/pasting

Just try adding an output inside the repeat until loop: REPEAT OUTPUT currentNum Multiplynum <-- Multiplynum + 1 currentNum <-- currentNum * Multiplynum UNTIL currentNum = Num Can you see the problem? See if you can fix it yourself...if not, I can tell you the answer...hint...you only need to add 1 extra character to make it work...

Yes - any FOR loop can be converted to either a pre or post-conditional loop

Glad they're useful :)

Thanks - and good luck for your exams too!

Glad it was useful :)

I mention that around 9:10...I copied the code from another question I did and didn't realise. Though I fixed it while making the video/for the website

Look at about 1:50 - the description of the SendFile procedure

Glad it's useful :)

Yes, the index would be 2 if you output/checked it after the loop. Remember, the loop will never run the 2nd time in this case, since FOUND = TRUE now after the assignment on line 20 When we output on line 19, the index is 1, which is what matters Alternatively, you could assign the Index <-- 0 instead of 1, then increment it on the first line of the loop, then the index number would be correct even after the loop. Does that make sense? I checked the mark scheme and for this question they just use a for loop which is strange, since even if you find the element in position 1, it will still keep looping for the other 49. If it's a function, a for loop is fine (and what I use for linear search) since you can just RETURN from the function which will terminate the loop when you find the value...but here, as it's not a function, there's no RETURN/BREAK statement to exit from the loop...hence why we need the flag

@@PseudocodePro i dont understand what you mean we could use a function and for loop, also cant we use a break statement here? Also i dont understand what a flag is.

also can you email me this paper thanks

​@@EzzatFarid I show the FOR loop/function approach at 1:44:00 of this video (ruclips.net/video/QyFh14RVhZU/видео.htmlsi=-n6G3MK6gQfCro-K&t=6242) Unfortunately the Cambridge pseudocode syllabus doesn't include a break statement. A "flag" is a boolean variable used to indicate if a condition is true/false...in this case, you can use a "DidFind" flag and only loop WHILE DidFind = FALSE

@@EzzatFarid The links to all papers are here on the site pseudocode.pro/exam-questions Either click on the "qp"/"ms" links...or click on the question, then there are also links for the paper & mark schemes too

I did think about adding the source code for the answers on my site before...but then I worried that people would just copy the answers, rather than actually trying the questions themselves. If people do want to just copy the answer, I guess they can do that from the mark schemes, which I also have links for For this one, you're lucky...I just checked...and the source code autosave is here: CONSTANT ClassSize <-- 3 DECLARE StudentName : ARRAY[1:3] OF STRING DECLARE ScreenTime : ARRAY[1:3, 1:7] OF INTEGER StudentName <-- ["Rosa","Isabelle","Mateo"] // would be empty in the exam - this code is purely so you can easily test your code without having to input large amounts of values // ScreenTime <-- [ // [39,463,231,432,293,7,7], // [437,222,297,259,47,422,368], // [24,43,64,25,93,63,40] // ] //Your code here: // Write a program that meets these requirements: // • allows all the students to enter their daily minutes of screen times for the past week // • calculates the total number of minutes of screen time for each student in the week // • counts, for each student, the number of days with more than 300 minutes of screen time // • calculates the average weekly minutes of screen time for the whole class // • finds the student with the lowest weekly minutes of screen time // • outputs for each student: // - name // - total week’s screen time in hours and minutes // - number of days with more than 300 minutes of screen time // • outputs the average weekly minutes of screen time for the whole class // • outputs the name of the student with the lowest weekly screen time. DECLARE TotalMinsForStudent, TotalMinsForClass, NumDaysOver300Mins, LowestMins : INTEGER DECLARE LowestMinsName : STRING TotalMinsForClass <-- 0 FOR StudentNum <-- 1 TO ClassSize TotalMinsForStudent <-- 0 NumDaysOver300Mins <-- 0 FOR DayNum <-- 1 TO 7 OUTPUT "Enter screen time for student ", StudentNum, ", day ", DayNum INPUT ScreenTime[StudentNum, DayNum] TotalMinsForStudent <-- TotalMinsForStudent + ScreenTime[StudentNum, DayNum] IF ScreenTime[StudentNum, DayNum] > 300 THEN NumDaysOver300Mins <-- NumDaysOver300Mins + 1 ENDIF NEXT DayNum TotalMinsForClass <-- TotalMinsForClass + TotalMinsForStudent IF StudentNum = 1 THEN LowestMins <-- TotalMinsForStudent LowestMinsName <-- StudentName[StudentNum] ELSE IF TotalMinsForStudent < LowestMins THEN LowestMins <-- TotalMinsForStudent LowestMinsName <-- StudentName[StudentNum] ENDIF ENDIF OUTPUT StudentName[StudentNum], "'s Screen Time" OUTPUT DIV(TotalMinsForStudent, 60), " hours, ", MOD(TotalMinsForStudent, 60), " minutes" OUTPUT "Days over 300 minutes: ", NumDaysOver300Mins OUTPUT "" NEXT StudentNum OUTPUT "--------------" OUTPUT "Average Minutes for Class: ", TotalMinsForClass / ClassSize OUTPUT "Student with Lowest Screen Time: ", LowestMinsName

Also, Thanks a lot for these videos, they are really helpful.

in the update procedure, do we really need to update the users name cuz its very unlikely that they would change their name

Exactly. Glad it makes sense now :)

Yes, you should be able to use a WHILE...ENDWHILE or REPEAT UNTIL loop...just make sure you have some index/count variable and you increment it For example, if you want to loop 10 times, you'd have DECLARE count : INTEGER count <-- 0 REPEAT count <-- count + 1 OUTPUT count UNTIL count = 10 See if you can implement this same functionality using a WHILE loop too

DECLARE count : INTEGER count <-- 0 WHILE count <> 10 DO count <-- count + 1 ENDWHILE is it like this?

@@EzzatFarid Yes...but usually, rather than <>, the mark schemes would just use count < 10

Try a simple bubble sort on paper with the numbers [5, 3, 4, 1, 2] After the first loop, you will notice the number 5 is in the rightmost position (i.e. the biggest element will be sorted)...after the 2nd loop, the 2nd biggest element (4) will be in the 2nd rightmost position...after the 3rd loop, the 3rd biggest element will be in the 3rd rightmost position and so on...so each loop, we ca decrement the endIndex by 1...since we know the elements to the right of it will be sorted Does that make sense?

yes thank you so much@@PseudocodePro

How did you do?

Glad it's useful...so about your vids...you mean you actually make those lego figures yourself?

@@PseudocodePro its VERY time consuming but yes!

@@BrickCustoms. ...how? Do you have a mold to make the plastic or something...or 3D printer?

@@PseudocodePro ahahha its LEGO 😂

@@BrickCustoms. Haha ok...so you put different pieces together? I thought you meant you actually made completely new lego pieces that don't exist from the manufacturer themselves?