listFW.visitor

Class SumRevAlgo

java.lang.Object

listFW.visitor.SumRevAlgo

All Implemented Interfaces:

IListAlgo

public class SumRevAlgo
extends java.lang.Object
implements IListAlgo

Returns the sum of a list of integers using reverse accumulation. The input parameter is not used ("nu").

Constructor Summary

Constructors

Constructor and Description
SumRevAlgo()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	emptyCase(MTList host, java.lang.Object... nu) Returns zero always.
java.lang.Object	nonEmptyCase(NEList host, java.lang.Object... nu) Returns first plus the sum of the rest of the list.

Methods inherited from class java.lang.Object

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

Constructor Detail

SumRevAlgo

public SumRevAlgo()

Method Detail

emptyCase

public java.lang.Object emptyCase(MTList host,
                         java.lang.Object... nu)

Returns zero always.

Specified by:

emptyCase in interface IListAlgo

Parameters:

host - the MTList that is executing this algorithm.

nu - a variable number of input parameters that can be used for any purpose.

Returns:

result from calling this method. The type of the result is problem-specific and may be null.

nonEmptyCase

public java.lang.Object nonEmptyCase(NEList host,
                            java.lang.Object... nu)

Returns first plus the sum of the rest of the list.

Specified by:

nonEmptyCase in interface IListAlgo

Parameters:

host - the NEList that is executing this algorithm

nu - a variable number of input parameters that can be used for any purpose.

Returns:

result from calling this method. The type of the result is problem-specific and may be null.