ShmoopTube

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Thank you We sneak And here's your smoke du jour

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brought to you by reusable methods A bit like wearing

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the same shirt day after day Except fewer people will

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notice All right which of the following methods are not

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appropriate for reuse in other programs Hillary swap print array

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carring in here is the code you skimming skimming skimming

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

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

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

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being asked to figure out which method or methods would

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not be suitable to reuse in another project somewhere else

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

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

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

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start with phil array This one looks like it counts

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

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five imagers or five thousand and fills an empty array

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

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specific to this exact project So we could certainly reuse

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this code elsewhere if necessary We can cross a d

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

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just a clever name Looking at the code here it

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appears swap takes two values in an array and well

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stops them well More specifically it takes the first of

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two array variables Moves it out of the way into

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a variable called temp Ferreri then moves the second variable

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this one into the first variables position in the array

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

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

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

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that swap can work elsewhere and we can scratch Be

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off the list All right What about print array for

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the need of this is just one line How could

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

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loop more closely There are three expressions when you start

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a four statement contained right there in the princess The

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first is the initialization statement which runs once at the

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beginning of the luke Here we set a variable up

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

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a value of zero to start The second expression is

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the terminator Which when It becomes false will terminate the

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

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run until a value i becomes twenty or greater Meaning

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

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number after the loop terminates The rest of the program

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will continue running The third expression is the increment which

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will run each time the loop runs It increases I

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buy one each time so all this put together means

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the variable i will started zero print a member of

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the array then add one toe i over and over

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and over until i reaches twenty Bottom line is this

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method prince twenty values oven array then stops that might

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work just fine for this program but can we really

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use that code anywhere else What if we need to

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print an array with only five values Or what about

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honore With three hundred or an array that changes sizes

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This print array method is just too inflexible to guarantee

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

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

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for any other purposes without modifications So the answer c

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is the only one That fits the bill Three is

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not suitable for dropping into another program and it really

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is time to change that shirt Come on frankie Yeah

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