ShmoopTube

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

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brought to you by people who can say the alphabet

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backwards either they're extremely smart they know how to integrate

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backwards through an array or they've just done a lot

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of sobriety tests and you don't want to go there

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All right Which of the following implementation successfully copies over

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array my alf to a realist alphabet All right And

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here your potential answers brought to you by the romans

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Okay option one uses a for each loop which will

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cycle once for each element in an array In this

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case for each string in the array my alf will

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add the content of that element to the array list

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alphabet and the loop will in as soon as we've

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reached the end of my alf that's about as simple

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as it gets and it will totally work all right

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Option two option two creates an iterated that begins at

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zero And while the current element of my health is

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not equal to z where it'll add that particular value

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to alphabet add one to the generator and do it

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all over again Do that to me one more time

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Great hold when the wild statement finally does find a

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value equal to z it'll end the loop and travel

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down to the next statement adding the current value of

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my alf meaning z we just found the alphabet so

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option two fits the bill to woo hoo wiseguys will

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have already noticed that none of the possible answers are

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all three options work and think we're totally done here

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but because we're also smart and uptight about things we're

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going to not just assume the answer is d all

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right so let's just check out option three and be

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sure it doesn't work looks decent on first glance right

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Well standard looking loop something niggling with the array list

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Nothing obviously a miss Ah wait we can't use that

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alphabet dot set call on indices that don't exist yet

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remember our ray list alphabet is totally empty all set

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replaces elements that already existe with other elements We need

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to use an ad call instead and if we're being

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nitpicky Well that four loop set up is saying well

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i is less than alphabet dot size and that would

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have to be changed to the size of alphabet at

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this stage would be zero so the loop would never

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run in all changing that terminator parameter to while i

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is less than my health dot length it would allow

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the loop to run the full twenty six Anyway we're 00:02:26.018 --> [endTime] done Wait Okay we're leaving we're leaving

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