extra166y

Class ParallelArrayWithBounds<T>

java.lang.Object

extra166y.AbstractParallelAnyArray

extra166y.ParallelArrayWithMapping<T,T>

extra166y.ParallelArrayWithFilter<T>

extra166y.ParallelArrayWithBounds<T>

Direct Known Subclasses:

ParallelArray

public abstract class ParallelArrayWithBounds<T>
extends ParallelArrayWithFilter<T>

A prefix view of ParallelArray that causes operations to apply only to elements within a given range. Instances of this class may be constructed only via prefix methods of ParallelArray or its other prefix classes.

Method Summary

Modifier and Type	Method and Description
abstract int	binarySearch(T target) Assuming this array is sorted, returns the index of an element equal to given target, or -1 if not present.
abstract int	binarySearch(T target, java.util.Comparator<? super T> 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 ParallelArrayWithBounds<T>	cumulate(Ops.Reducer<T> reducer, T base) Replaces each element with the running cumulation of applying the given reducer.
abstract int	indexOf(T target) Returns the index of some element equal to given target, or -1 if not present
abstract T	precumulate(Ops.Reducer<T> reducer, T base) Replaces each element with the cumulation of applying the given reducer to all previous values, and returns the total reduction.
abstract ParallelArrayWithBounds<T>	sort() Sorts the elements, assuming all elements are Comparable.
abstract ParallelArrayWithBounds<T>	sort(java.util.Comparator<? super T> cmp) Sorts the elements.
abstract ParallelArrayWithBounds<T>	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.ParallelArrayWithFilter

allNonidenticalElements, allUniqueElements, hasAllEqualElements, hasAllIdenticalElements, replaceWithGeneratedValue, replaceWithMappedIndex, replaceWithMappedIndex, replaceWithMapping, replaceWithMapping, replaceWithMapping, replaceWithValue, withFilter, withFilter, withIndexedFilter

Methods inherited from class extra166y.ParallelArrayWithMapping

all, all, any, apply, max, max, min, min, reduce, sequentially, summary, summary, withIndexedMapping, withIndexedMapping, withIndexedMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping, withMapping

Methods inherited from class extra166y.AbstractParallelAnyArray

anyIndex, isEmpty, size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

withBounds

public abstract ParallelArrayWithBounds<T> 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 ParallelArray.

Parameters:

firstIndex - the lower bound (inclusive)

upperBound - the upper bound (exclusive)

Returns:

operation prefix

indexOf

public abstract int indexOf(T 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

binarySearch

public abstract int binarySearch(T 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

binarySearch

public abstract int binarySearch(T target,
                                 java.util.Comparator<? super T> 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 for

comparator - the comparator

Returns:

the index or -1 if not present

cumulate

public abstract ParallelArrayWithBounds<T> cumulate(Ops.Reducer<T> reducer,
                                                    T base)

Replaces each element with the running cumulation of applying the given reducer.

Parameters:

reducer - the reducer

base - the result for an empty array

Returns:

this (to simplify use in expressions)

precumulate

public abstract T precumulate(Ops.Reducer<T> reducer,
                              T base)

Replaces each element with the cumulation of applying the given reducer to all previous values, and returns the total reduction.

Parameters:

reducer - the reducer

base - the result for an empty array

Returns:

the total reduction

sort

public abstract ParallelArrayWithBounds<T> sort(java.util.Comparator<? super T> 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)

sort

public abstract ParallelArrayWithBounds<T> 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.