AP Computer Science 1.3 Standard Data Structures

method has the following preconditions our is a valid in

terrain declared with a specified length greater than or equal

to one Are that bar well which of the following

is the best post condition for the pillory method And

here the potential answers we're thinking we're thinking and if

we stop now we're thinking again okay free and post

conditions are like promises we make to ourselves almost like

new year's resolutions except we actually wind up keeping In

the case of the phil ary method we're working with

the precondition that r is a valid array of imagers

with a length greater than or equal to one let's

walk through the method to see what it actually does

well first line hear gives us an imager named flynn

which is the length of the array we're going to

be filling The next line starts up for life the

three parameters were set up to create emitter i as

the counter starting at zero and specifies that lupul run

until ice less than len becomes false and iterated I

buy one each time The looks like the code within

the loop itself visits the array of whichever position i

is at the time and fills that position's content with

again number that eyes that though position zero in the

array will contain the number zero position four will contain

the number four and so on Get it let's Look

at the potential answers option a this one says that

our is an imager array of length twenty Well no

the hillary method is written in such a way that

it'll fill an array of whatever size we specified Option

b says our is an imager array of a length

thread a ventricle the one and each value equals its

index Hey that sounds exactly like what we're making better

check the other cells What option c says is technically

true but it's less specific than option b and that

it doesn't say anything about the values being the indices

though it's not our best choice option d again with

the twenty thing no option a is pretty similar to

be except that the arrays and unspecified size that's not

true erase sizes definitely greater than zero because the loops

generator starts at zero and aloof runs until the generator

is equal to or greater than our yeah software pirate

joke we've beaten to death If we specified we wanted

in a ray the sides of negative three for example

aside from being impossible the four loop wouldn't run it

all because the generator is already greater than our and

no array would be generated Not only that but our

precondition already specified The array of length is greater than

or equal to one so nuts to that Our answer's 00:02:57.115 --> [endTime] Definitely B no not r it's b