org.magicwerk.brownies.collections.helper.primitive

Class LongBinarySearch

java.lang.Object

org.magicwerk.brownies.collections.helper.primitive.LongBinarySearch

public class LongBinarySearch
extends java.lang.Object

Binary search for primitive type long.

Constructor Summary

Constructors

Constructor and Description
LongBinarySearch()

Method Summary

Modifier and Type	Method and Description
static int	binarySearch(org.magicwerk.brownies.collections.primitive.ILongList list, long key, int lower, int upper) Searches the specified list for the specified object using the binary search algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

LongBinarySearch

public LongBinarySearch()

Method Detail

binarySearch

public static int binarySearch(org.magicwerk.brownies.collections.primitive.ILongList list,
                               long key,
                               int lower,
                               int upper)

Searches the specified list for the specified object using the binary search algorithm. The list must be sorted into ascending order according to the specified comparator (as by the Collections.sort(List, Comparator) method), prior to making this call. If it is not sorted, the results are undefined.

This method runs in log(n) time on random-access lists, which offer near-constant-time access to each list element.

Parameters:

list - the list to be searched.

key - the value to be searched for.

lower - lower bound of range to search

upper - upper bound of range to search

Returns:

the index of the search key, if it is contained in the list; otherwise, (-(insertion point) - 1).