week 3 activity 6 q. 2

[Inquisitive Learner]

Q. 2.What would be the value stored in the variable marks?   marks = SumMaths(Z) ? 

Answer is 0 because Z doesnt exist in the dataset?

[Anand Iyer]

For answering this, look carefully into the code again.

Procedure SumMaths(gen)

Sum = 0

while (Pile 1 has more cards) {

Pick a card X from Pile 1

Move X to Pile 2

if (X.Gender == gen) {

Sum = Sum + X.Maths

}

}

return(Sum)

end SumMaths

In the first step, Sum has been initialized to 0.  

In the next step, we compare the gender in the card and the parameter;  if they compare equal, then math marks are added to Sum, otherwise, Sum is left as it is (at 0).

In our case, none of the cards have Z as gender, so it doesn't compare equal for any card, and Sum doesn't get updated for any card.  It remains 0.  

Finally, it returns the current value of Sum (0) for every card.

[Computational Thinking Support 2]

Hi,

The above explanation is correct.

If you have still doubt please write us again.

Regards,

Deepak

IITM Online Degree Team