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Playlist AP® Computer Science: Standard Algorithms 16 videos
AP Computer Science 1.1 Standard Algorithms Drill 1, Problem 1. What is the output of Recurse(3)?
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 3.2 Standard Algorithms 173 Views
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Description:
AP Computer Science 3.2 Standard Algorithms. What is the worst case for insertion sort?
Transcript
- 00:00
Thank you We sneak and here's your shmoop du jour
- 00:05
brought to you by algorithms we thought were really cool
- 00:09
and then turned out to be that's what's the worst
- 00:13
case for insertion sort story Yeah right This question is
- 00:18
asking what is the worst possible thing that could happen
Full Transcript
- 00:22
to insertion Sort Basically what type of data will make
- 00:25
the longest complete let's Think about what insurgents or does
- 00:30
it goes through each element and then moves it backwards
- 00:33
Index bite index until there's no number bigger behind so
- 00:38
unsorted random data won't necessarily make it take the longest
- 00:42
time possible because numbers will be in random order Not
- 00:45
every element will take the maximum amount of time to
- 00:49
sort waken obviously eliminate choice b because this will take
- 00:53
the shortest amount of time that leaves us with choice
- 00:55
C is the only viable answer so let's take a
- 00:57
look if insertions over applied on data that was sorted
- 01:01
in reverse order meaning the largest elements were in the
- 01:05
beginning of the array the algorithm would have to move
- 01:07
every element the maximum number of times it would have
- 01:12
to move every single element to the opposite position in
- 01:14
the array meaning first will be last and so on
- 01:18
This produces a rough run time of squared definitely the
- 01:23
war's case scenario Next time we'll look at more things 00:01:26.003 --> [endTime] that looked promising Originally like latest transformers movie
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