Difference between revisions of "Slices"

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This assignment has been replaced by [[Ranges]].
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credit for this assignment: Finn Voichick and Dennis Cosgrove
 
credit for this assignment: Finn Voichick and Dennis Cosgrove
  
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This studio is about creating an easier way to split data so that it can be worked on in parallel. The splitting of the data is still done sequentially. That means at no point in this studio should you be using async() or finish().
 
This studio is about creating an easier way to split data so that it can be worked on in parallel. The splitting of the data is still done sequentially. That means at no point in this studio should you be using async() or finish().
  
{{warning | Do NOT Copy The Data Into SubArrays}}
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=Code To Investigate=
 
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[https://www.cse.wustl.edu/~cosgroved/courses/cse231/current/apidocs/slice/core/IndexedRange.html class IndexedRange]
Our "Slices" will actually be a list of objects called "Slice". A Slice contains a couple things, one of them being the full, original data that is passed through at the start. It is important that the entire array is given to the Slice. Not a copy of the array, nor a shortened version of the array, but the ''entire'' thing.
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:[https://www.cse.wustl.edu/~cosgroved/courses/cse231/current/apidocs/slice/core/IndexedRange.html#%3Cinit%3E(int,int,int) constructor].
 
 
=class IndexedRange=
 
use: [https://www.cse.wustl.edu/~cosgroved/courses/cse231/current/apidocs/slice/core/IndexedRange.html class IndexedRange] specifically, its [https://www.cse.wustl.edu/~cosgroved/courses/cse231/current/apidocs/slice/core/IndexedRange.html#%3Cinit%3E(int,int,int) constructor].
 
  
 
<pre>public IndexedRange(int sliceIndexId, int minInclusive, int maxExclusive)</pre>
 
<pre>public IndexedRange(int sliceIndexId, int minInclusive, int maxExclusive)</pre>
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=Code to Implement=
 
=Code to Implement=
{{CodeToImplement|Slices|createNSlicesForArrayObject|slices.studio}}
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{{CodeToImplement|Slices|createNSlices|slices.studio}}
  
 
==createNSlices==
 
==createNSlices==
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Given a range [minInclusive, maxExclusive) and a number of slices to make, return a List of IndexedRanges. Understanding what a IndexedRange is and how it is used is important when writing this solution.  
 
Given a range [minInclusive, maxExclusive) and a number of slices to make, return a List of IndexedRanges. Understanding what a IndexedRange is and how it is used is important when writing this solution.  
  
Note that a Slice has a minimum and maximum value. This acts as the "range" that sections off a part of the original array. The goal is to have each slice's range be the entire array when put together, with no overlap. Some examples are giving below. Working through more examples can be a helpful way of figuring out what code to write if you get stuck.
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The goal is to have each slice's range be the entire array when put together, with no overlap. Some examples are giving below. Working through more examples can be a helpful way of figuring out what code to write if you get stuck.
 
 
{{ tip | Because we are working with something of type A, "data.length" is not possible. To get the size of "data", we will need to use the [https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Array.html#getLength-java.lang.Object- Array.getLength(Object)] method. }}
 
  
 
{{ tip | In a slice, the minimum is inclusive and the maximum is exclusive.  This means for two slices next to each other, slice1.getMaxExclusive() is equal to slice2.getMinInclusive(). }}
 
{{ tip | In a slice, the minimum is inclusive and the maximum is exclusive.  This means for two slices next to each other, slice1.getMaxExclusive() is equal to slice2.getMinInclusive(). }}
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==Correctness==
 
==Correctness==
 
{{TestSuite|SlicesTestSuite|slice.studio}}
 
{{TestSuite|SlicesTestSuite|slice.studio}}
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=Pledge, Acknowledgments, Citations=
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{{Pledge|studio-slices}}
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Latest revision as of 21:56, 30 November 2022

This assignment has been replaced by Ranges.