LightJason - AgentSpeak(L++)
CStirling.java
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1 /*
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23 
24 package org.lightjason.agentspeak.action.builtin.math;
25 
26 import com.codepoetics.protonpack.StreamUtils;
27 import org.apache.commons.math3.util.CombinatoricsUtils;
35 
36 import javax.annotation.Nonnegative;
37 import javax.annotation.Nonnull;
38 import java.util.List;
39 
40 
51 public final class CStirling extends IBuiltinAction
52 {
56  private static final long serialVersionUID = -9056209645109382946L;
57 
58  @Nonnegative
59  @Override
60  public final int minimalArgumentNumber()
61  {
62  return 2;
63  }
64 
65  @Nonnull
66  @Override
67  public final IFuzzyValue<Boolean> execute( final boolean p_parallel, @Nonnull final IContext p_context,
68  @Nonnull final List<ITerm> p_argument, @Nonnull final List<ITerm> p_return )
69  {
70  StreamUtils.windowed(
71  CCommon.flatten( p_argument )
72  .map( ITerm::<Number>raw )
73  .mapToInt( Number::intValue )
74  .boxed(),
75  2,
76  2
77  )
78  .map( i -> CombinatoricsUtils.stirlingS2( i.get( 0 ), i.get( 1 ) ) )
79  .map( CRawTerm::from )
80  .forEach( p_return::add );
81 
82  return CFuzzyValue.from( true );
83  }
84 
85 }
base class of build-in actions for setting name by package/classname (without prefix character) ...
static< N > IFuzzyValue< N > from( @Nonnull final N p_value)
factory
common structure for execution definition
execution context with local data
Definition: IContext.java:42
static Stream< ITerm > flatten( @Nonnull final Collection<? extends ITerm > p_terms)
flat term-in-term collection into a straight term list
final int minimalArgumentNumber()
minimum number of arguments
Definition: CStirling.java:60
final IFuzzyValue< Boolean > execute(final boolean p_parallel, @Nonnull final IContext p_context, @Nonnull final List< ITerm > p_argument, @Nonnull final List< ITerm > p_return)
defines a plan-body operation
Definition: CStirling.java:67
action for calculating stirling number.
Definition: CStirling.java:51
result for an immutable fuzzy value
static< N > CRawTerm< N > from(final N p_value)
factory for a raw term
Definition: CRawTerm.java:104
term structure for simple datatypes
Definition: CRawTerm.java:45