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Playlist AP® Computer Science: Standard Algorithms 16 videos
AP Computer Science 1.2 Standard Algorithms. What is the output of Recurse(5)?
AP Computer Science 1.3 Standard Algorithms. How many times will mystery be called for mystery(4), including the initial call?
AP Computer Science 1.4 Standard Algorithms. How many times will mystery be called for mystery(n) for n > 1?
AP Computer Science 3.3 Standard Algorithms 175 Views
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Description:
AP Computer Science: Standard Algorithms Drill 3, Problem 3. What should go in "expression 1" to satisfy the conditional statement?
Transcript
- 00:00
Sorry And here's your smug too Sure Brought to you
- 00:05
by parentheses there like little hugs You give your computer
- 00:09
Oh what's The computers sometimes rejects you know like children
- 00:14
Alright this code is an implementation of a sequential search
- 00:18
What should go in expression One to satisfy the conditional
Full Transcript
- 00:21
statement That's history Got it right here Potential answers equals
- 00:28
and yeah that's gotta be it Okay All right Well
- 00:31
remember those math word problems where the buildup would get
- 00:34
really convoluted and try to overwhelm you with information Just
- 00:38
a cloud A simple question like jenny and tony started
- 00:42
a fruit stand gather jenny is selling the oranges she
- 00:44
grew which cost ten cents apiece to grow over four
- 00:47
months She's now selling them for twenty five cents apiece
- 00:49
that the average rate of twenty per hour Meanwhile tony's
- 00:52
juggling three apples and dropped one How many apples is
- 00:55
tony holding Yeah same sort of thing Here we're being
- 00:58
given a big rambling thing about a search method and
- 01:01
expressions and conditional statements But looking at the possible answers
- 01:05
it's pretty obvious We're on lee really being asked how
- 01:08
to get the number of elements in an array list
- 01:12
got it all right Well this is one of the
- 01:14
ways in which standard arrays differ from array list Object
- 01:18
arrays have a very simple very useful attribute called length
- 01:21
No joke there that you can look at which will
- 01:24
return The number of elements in the array goes a
- 01:26
little like this Yeah but a raylan aren't your usual
- 01:31
arrays and don't have that exact attributes Instead there's a
- 01:34
method called size Yeah that's The call with empty parentheses
- 01:39
Not very different but it goes a little like this
- 01:43
Which brings us back to our potential answers The way
- 01:46
to get the array list size is only properly done
- 01:49
in si size with the empty parentheses or you know 00:01:53.508 --> [endTime] hugs Oh
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