Package extra166y
Class ParallelDoubleArrayWithBounds
- java.lang.Object
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- extra166y.AbstractParallelAnyArray
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- extra166y.ParallelDoubleArrayWithDoubleMapping
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- extra166y.ParallelDoubleArrayWithFilter
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- extra166y.ParallelDoubleArrayWithBounds
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- Direct Known Subclasses:
ParallelDoubleArray
public abstract class ParallelDoubleArrayWithBounds extends ParallelDoubleArrayWithFilter
A prefix view of ParallelDoubleArray that causes operations to apply only to elements within a given range. Instances of this class may be constructed only via prefix methods of ParallelDoubleArray or its other prefix classes.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description abstract int
binarySearch(double target)
Assuming this array is sorted, returns the index of an element equal to given target, or -1 if not present.abstract int
binarySearch(double target, Ops.DoubleComparator comparator)
Assuming this array is sorted with respect to the given comparator, returns the index of an element equal to given target, or -1 if not present.abstract ParallelDoubleArrayWithBounds
cumulate(Ops.DoubleReducer reducer, double base)
Replaces each element with the running cumulation of applying the given reducer.abstract ParallelDoubleArrayWithBounds
cumulateSum()
Replaces each element with the running sumabstract int
indexOf(double target)
Returns the index of some element equal to given target, or -1 if not presentabstract double
precumulate(Ops.DoubleReducer reducer, double base)
Replaces each element with the cumulation of applying the given reducer to all previous values, and returns the total reduction.abstract double
precumulateSum()
Replaces each element with its prefix sumabstract ParallelDoubleArrayWithBounds
sort()
Sorts the elements, assuming all elements are Comparable.abstract ParallelDoubleArrayWithBounds
sort(Ops.DoubleComparator cmp)
Sorts the elements.abstract ParallelDoubleArrayWithBounds
withBounds(int firstIndex, int upperBound)
Returns an operation prefix that causes a method to operate only on the elements of the array between firstIndex (inclusive) and upperBound (exclusive).-
Methods inherited from class extra166y.ParallelDoubleArrayWithFilter
allUniqueElements, hasAllEqualElements, replaceWithGeneratedValue, replaceWithMappedIndex, replaceWithMappedIndex, replaceWithMapping, replaceWithMapping, replaceWithMapping, replaceWithValue, withFilter, withFilter, withIndexedFilter
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Methods inherited from class extra166y.ParallelDoubleArrayWithDoubleMapping
all, apply, max, max, min, min, reduce, sequentially, sum, summary, summary, withIndexedMapping, withIndexedMapping, withIndexedMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping
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Methods inherited from class extra166y.AbstractParallelAnyArray
anyIndex, isEmpty, size
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Method Detail
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withBounds
public abstract ParallelDoubleArrayWithBounds withBounds(int firstIndex, int upperBound)
Returns an operation prefix that causes a method to operate only on the elements of the array between firstIndex (inclusive) and upperBound (exclusive). The bound arguments are relative to the current bounds. For example pa.withBounds(2, 8).withBounds(3, 5) indexes the 5th (= 2+3) and 6th elements of pa. However, indices returned by methods such as indexOf are with respect to the underlying ParallelDoubleArray.- Parameters:
firstIndex
- the lower bound (inclusive)upperBound
- the upper bound (exclusive)- Returns:
- operation prefix
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indexOf
public abstract int indexOf(double target)
Returns the index of some element equal to given target, or -1 if not present- Parameters:
target
- the element to search for- Returns:
- the index or -1 if not present
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binarySearch
public abstract int binarySearch(double target)
Assuming this array is sorted, returns the index of an element equal to given target, or -1 if not present. If the array is not sorted, the results are undefined.- Parameters:
target
- the element to search for- Returns:
- the index or -1 if not present
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binarySearch
public abstract int binarySearch(double target, Ops.DoubleComparator comparator)
Assuming this array is sorted with respect to the given comparator, returns the index of an element equal to given target, or -1 if not present. If the array is not sorted, the results are undefined.- Parameters:
target
- the element to search forcomparator
- the comparator- Returns:
- the index or -1 if not present
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cumulate
public abstract ParallelDoubleArrayWithBounds cumulate(Ops.DoubleReducer reducer, double base)
Replaces each element with the running cumulation of applying the given reducer.- Parameters:
reducer
- the reducerbase
- the result for an empty array- Returns:
- this (to simplify use in expressions)
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cumulateSum
public abstract ParallelDoubleArrayWithBounds cumulateSum()
Replaces each element with the running sum- Returns:
- this (to simplify use in expressions)
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precumulate
public abstract double precumulate(Ops.DoubleReducer reducer, double base)
Replaces each element with the cumulation of applying the given reducer to all previous values, and returns the total reduction.- Parameters:
reducer
- the reducerbase
- the result for an empty array- Returns:
- the total reduction
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precumulateSum
public abstract double precumulateSum()
Replaces each element with its prefix sum- Returns:
- the total sum
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sort
public abstract ParallelDoubleArrayWithBounds sort(Ops.DoubleComparator cmp)
Sorts the elements. Unlike Arrays.sort, this sort does not guarantee that elements with equal keys maintain their relative position in the array.- Parameters:
cmp
- the comparator to use- Returns:
- this (to simplify use in expressions)
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sort
public abstract ParallelDoubleArrayWithBounds sort()
Sorts the elements, assuming all elements are Comparable. Unlike Arrays.sort, this sort does not guarantee that elements with equal keys maintain their relative position in the array.- Returns:
- this (to simplify use in expressions)
- Throws:
java.lang.ClassCastException
- if any element is not Comparable.
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