Package org.drools.verifier.misc

Class FindMissingNumber

java.lang.Object

org.drools.verifier.misc.FindMissingNumber

public class FindMissingNumber
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static int	MIN_NUMBER_OF_RESTRICTIONS

Constructor Summary

Constructors

Constructor	Description
FindMissingNumber()

Method Summary

Modifier and Type	Method	Description
protected static Number	findMultiplicationPattern(BigDecimal[] numbers)	Looks for multiplication pattern, on each step x multiplied or divided.
protected static Number	findSumPattern(BigDecimal[] numbers)	Looks for sum pattern, on each step x is added or removed.
static Number	testForPattern(Collection<NumberRestriction> restrictions)	Test if the values in constraints are in pattern.

Methods inherited from class java.lang.Object

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

Field Detail

MIN_NUMBER_OF_RESTRICTIONS

public static final int MIN_NUMBER_OF_RESTRICTIONS

See Also:

Constant Field Values

Constructor Detail

FindMissingNumber

public FindMissingNumber()

Method Detail

testForPattern

public static Number testForPattern(Collection<NumberRestriction> restrictions)

Test if the values in constraints are in pattern.

Parameters:

restrictions -

Returns:

false if can't find a pattern or constraints list is null or size of the list is under 3.

findSumPattern

protected static Number findSumPattern(BigDecimal[] numbers)

Looks for sum pattern, on each step x is added or removed. -x is the same as +(-x) so this works for both.

Parameters:

numbers -

Returns:

true if pattern is found.

findMultiplicationPattern

protected static Number findMultiplicationPattern(BigDecimal[] numbers)

Looks for multiplication pattern, on each step x multiplied or divided. *x is the same as *(1/x) so this works for both.

Parameters:

numbers -

Returns:

true if pattern is found.