com.google.ortools.sat

Class WeightedSumExpression

java.lang.Object

com.google.ortools.sat.WeightedSumExpression

All Implemented Interfaces:

LinearArgument, LinearExpr

public final class WeightedSumExpression
extends java.lang.Object
implements LinearExpr

A specialized linear expression: sum(ai * xi) + b.

Constructor Summary

Constructors

Constructor and Description
WeightedSumExpression(int[] variablesIndices, long[] coefficients, long offset)

Method Summary

Modifier and Type	Method and Description
LinearExpr	build() Builds a linear expression.
long	getCoefficient(int index) Returns the ith coefficient.
long	getOffset() Returns the constant part of the expression.
int	getVariableIndex(int index) Returns the index of the ith variable.
int	numElements() Returns the number of terms (excluding the constant one) in this expression.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.ortools.sat.LinearExpr

affine, constant, newBuilder, rebuildFromLinearExpressionProto, sum, term, weightedSum

Constructor Detail

WeightedSumExpression

public WeightedSumExpression(int[] variablesIndices,
                             long[] coefficients,
                             long offset)

Method Detail

build

public LinearExpr build()

Description copied from interface: LinearArgument

Builds a linear expression.

Specified by:

build in interface LinearArgument

numElements

public int numElements()

Description copied from interface: LinearExpr

Returns the number of terms (excluding the constant one) in this expression.

Specified by:

numElements in interface LinearExpr

getVariableIndex

public int getVariableIndex(int index)

Description copied from interface: LinearExpr

Returns the index of the ith variable.

Specified by:

getVariableIndex in interface LinearExpr

getCoefficient

public long getCoefficient(int index)

Description copied from interface: LinearExpr

Returns the ith coefficient.

Specified by:

getCoefficient in interface LinearExpr

getOffset

public long getOffset()

Description copied from interface: LinearExpr

Returns the constant part of the expression.

Specified by:

getOffset in interface LinearExpr