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AP Computer Science Videos 112 videos

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AP Computer Science 3.5 Program Development 199 Views


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AP Computer Science 3.5 Program Development. What is the smallest set of orders that adequately tests our program?

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Transcript

00:00

Thank you We speak and here's your shmoop usually brought

00:05

to you by pickles that air jealous of cucumbers They're

00:09

a little sour We're starting a new business that ship's

00:13

dill pickles We relished our experience in the field of

00:16

education but it isn't really our jam anymore Given the

00:20

state of the economy We're in a bit of well

00:22

pickle and we want to generate more revenue We've written

00:25

a program that sorts and ship pickles in the following

00:27

quantities and prices based on order size program takes the

00:31

order sizes and imager input parameter and outputs The total

00:34

cost of the order Four dollars on nine cents Reach

00:37

pickle upto Five pickles Two bucks for each additional pickle

00:41

beyond five but not exceeding twelve and a dollar for

00:44

each additional pickle after twelve What's the smallest set of

00:48

orders that adequately tests our program Here's the thing here

00:53

is like rain Yeah think about this All right So

00:58

for this problem we want a set of numbers that

01:00

test each possible case for each range We want to

01:03

test the lower limit A number in the middle and

01:05

the upper limit For example the first range Where there

01:09

Should be no differential in the cost of pickles is

01:11

from zero to five pickles Thus we wanna test zero

01:14

pickles a number in between three pickles and five pickles

01:19

This'll adequately test the first price range for the next

01:22

price range We test the lower and upper limits a

01:25

five and twelve and a middle number seven Lastly we

01:28

want to test the upper price range the lower limit

01:30

being twelve in this case and unique as all we

01:33

need to do adequately tested is input a number greater

01:36

than twelve Well all pickles after twelve should be the

01:40

same cost so we can pick any number above twelve

01:43

to test our last case But we have test cases

01:47

with zero three five seven twelve fifteen pickles and that

01:51

makes our answer choice D Next time we'll cover the 00:01:53.848 --> [endTime] process of making pickles not a big deal

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