AP Computer Science 1.2 Standard Data Structures

carring in here is the code you skimming skimming skimming

that's giving Come on All right And here the potential

answers Causeway We thought yourself when your mother's competing you

and all right let's go Alright so looks like we're

being asked to figure out which method or methods would

not be suitable to reuse in another project somewhere else

The many coders frequently reuse when possible and what's the

point in reinventing the wheel if you've already written a

perfectly suitable piece of code for another project Well let's

start with phil array This one looks like it counts

the number of values in a given array whether it's

five imagers or five thousand and fills an empty array

with the values there's Nothing in this method that is

specific to this exact project So we could certainly reuse

this code elsewhere if necessary We can cross a d

off the list by how about swap Well it's not

just a clever name Looking at the code here it

appears swap takes two values in an array and well

stops them well More specifically it takes the first of

two array variables Moves it out of the way into

a variable called temp Ferreri then moves the second variable

this one into the first variables position in the array

We'll temp is then moved into the second variables place

into the switches Complete there's nothing and swap that tied

specifically to this project either So it's safe to say

that swap can work elsewhere and we can scratch Be

off the list All right What about print array for

the need of this is just one line How could

it not work somewhere else Well let's examine this four

loop more closely There are three expressions when you start

a four statement contained right there in the princess The

first is the initialization statement which runs once at the

beginning of the luke Here we set a variable up

to be our iterated er or counter it's eye with

a value of zero to start The second expression is

the terminator Which when It becomes false will terminate the

luke piri its eyes less than twenty meaning it'll continually

run until a value i becomes twenty or greater Meaning

it will run twenty times Cried it's in your base

number after the loop terminates The rest of the program

will continue running The third expression is the increment which

will run each time the loop runs It increases I

buy one each time so all this put together means

the variable i will started zero print a member of

the array then add one toe i over and over

and over until i reaches twenty Bottom line is this

method prince twenty values oven array then stops that might

work just fine for this program but can we really

use that code anywhere else What if we need to

print an array with only five values Or what about

honore With three hundred or an array that changes sizes

This print array method is just too inflexible to guarantee

that we could use it elsewhere That's not to say

it's bad code so we can't really rely on it

for any other purposes without modifications So the answer c

is the only one That fits the bill Three is

not suitable for dropping into another program and it really

is time to change that shirt Come on frankie Yeah