AP Computer Science Principles Final Exam Review Correct 100%
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Course
APCSP
Institution
APCSP
Overflow - ANSWER error that results when the number of bits is not enough to hold the number, like a car's odometer "rolling over"
Round-off - ANSWER error that results when the number of bits is not enough to represent the actual number, like 3 digits to represent π as 3.14
Lossy - ANSWER ...
AP Computer Science Principles Final
Exam Review Correct 100%
Overflow - ANSWER error that results when the number of bits is not enough to hold the
number, like a car's odometer "rolling over"
Round-off - ANSWER error that results when the number of bits is not enough to
represent the actual number, like 3 digits to represent π as 3.14
Lossy - ANSWER Compressing data in a way that throws some data away and makes it
almost impossible to recover the original, great compression, like JPEG images
Lossless - ANSWER Compressing data in a way that preserves all data away and
allows full recovery of the original, good compression -- usually not as good as lossy,
like PNG images
Metadata - ANSWER data about data, like a camera storing the location, aperture,
shutter speed, etc. for a digital photo
Sequencing - ANSWER code flows line by line, one after another, like a recipe
Selection - ANSWER a boolean condition to determine which of two algorithmic paths
are taken, aka if-then
Iteration - ANSWER using a looping control structure, like while, for, foreach, repeat,
repeat-until, etc.
Reasonable time - ANSWER polynomial in the number of steps an algorithm takes in
the worst case based on the input size
Not reasonable time - ANSWER Usually exponential in the number of steps, like
doubling every time your input grows by one
Heuristic - ANSWER using a "rule" to guide an algorithm, like always walking toward the
north star if you were stuck in a forest
Undecidable - ANSWER A problem that is so difficult, we can't ever create an algorithm
that would be able to answer yes or no for all inputs, like determining if a user's program
run on some input would always stop and not run forever
Linear vs binary search - ANSWER Going one by one vs starting in the middle and
going left/right like looking for a word in the dictionary -- binary search requires the list to
be sorted in order
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