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Standard Algorithms Videos 20 videos

AP Computer Science 2.1 Standard Algorithms
432 Views

APCS: Standard Algorithms Drill 2, Problem 1. How much slower is InefficientSum than EfficientSum in the best case for an array of n elements?

AP Computer Science 2.5 Standard Algorithms
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In this computer science drill question, figure out which implementation will copy one array over to another.

AP Computer Science 3.3 Standard Algorithms
175 Views

AP Computer Science: Standard Algorithms Drill 3, Problem 3. What should go in "expression 1" to satisfy the conditional statement?

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AP Computer Science 3.2 Standard Algorithms 173 Views


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AP Computer Science 3.2 Standard Algorithms. What is the worst case for insertion sort?

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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

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

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to move every single element to the opposite position in

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the array meaning first will be last and so on

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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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