ShmoopTube

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And here's your shmoop du jour brought to you by an iterating

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ArrayList it'll throw you for a loop all right which best describes the [People riding rollercoaster]

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functionality of the remove method for an ArrayList at your potential answers

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lot of text......... all right arrays that array

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lists are similar but standard arrays have some limitations the biggest tubing [Man blowing whistle with stop sign]

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that arrays have a fixed size and that elements can't be added or removed this

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once you build an array you're pretty much stuck with the original size you [Man moving array side to side]

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specify yeah you can find ways to sidestep it you can write methods to

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build a new array consisting of an old arrays contents plus or minus whatever

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elements you want to add or remove but it's a little janky though and at that [Computer burning]

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point you're just recreating a lesser version of an ArrayList so you may as [Man throwing work on his desk]

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well ride dragons look at you so ArrayList removed metal works much like [Man riding a dragon]

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you'd expect let's say we have four elements in an array list called the

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scene bad movies jingle all the way police academy first kid and house cast

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our police academy isn't a sin bad movie so we'll remove it from the arraylist [Police men talking on the street]

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and there it goes with trailing thing's sliding upward in line but now

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let's look at the potential answers would fit option a well it removes the

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element at the input index and moves all elements right this way from the front

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fill the spot and adjust the size wait whose elements to the right mmm nope [Man looking confused]

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that's not what happens houseguests moved left trailing elements will always

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move left why because indexing always begin to add zero option B also says

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things move the right which isn't going to work option C well it removes the

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element at the input index 0 so far so good and we move all the elements left

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from in to fill the spot and yep adjust the size right and returns the remove

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element yeah all right the remove method does indeed [Remove method lands in middle of road]

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returned the element you've just removed in case you needed it for something so C

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looks like our answer but let's check the other B is the same answer C but

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without returning your moved element so no option E removes the element from

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the list returns the element and so on but doesn't mention anything about

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moving the remaining elements all rights are there now that wasn't Sinbad or so

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bad was it [Man singing on stage]

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