org.neo4j.collection.primitive

Class PrimitiveArrays

java.lang.Object

org.neo4j.collection.primitive.PrimitiveArrays

public class PrimitiveArrays
extends Object

Specialized methods for operations on primitive arrays. For set operations (union, intersect, symmetricDifference), input and output arrays are arrays containing unique values in sorted ascending order.

Method Summary

Modifier and Type	Method and Description
static long[]	intersect(long[] left, long[] right) Compute the intersection of two sorted long array sets.
static long[]	symmetricDifference(long[] left, long[] right) Compute the symmetric difference (set XOR basically) of two sorted long array sets.
static int[]	union(int[] lhs, int[] rhs) Compute union of two sets of integers represented as sorted arrays.

Methods inherited from class java.lang.Object

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

Method Detail

union

public static int[] union(int[] lhs,
                          int[] rhs)

Compute union of two sets of integers represented as sorted arrays.

Parameters:

lhs - a set of integers, represented as a sorted array.

rhs - a set of integers, represented as a sorted array.

Returns:

a set of integers, represented as a sorted array.

intersect

public static long[] intersect(long[] left,
                               long[] right)

Compute the intersection of two sorted long array sets.

Parameters:

left - a sorted array set

right - another sorted array set

Returns:

the intersection, represented as a sorted long array

symmetricDifference

public static long[] symmetricDifference(long[] left,
                                         long[] right)

Compute the symmetric difference (set XOR basically) of two sorted long array sets.

Parameters:

left - a sorted array set

right - another sorted array set

Returns:

the symmetric difference, represented as a sorted long array