
sequence(+Low, +High, +K, +ZeroOnes)

   The number of occurrences of the value 1 is between Low and High for all sequences of K variables in ZeroOnes

Arguments
   Low                 Non-negative integer
   High                Positive integer
   K                   Postive integer
   ZeroOnes            A collection of 0/1 variables or integers

Type
   library(fd_global_gac)

Description

    This constraint ensures that the number of occurrences of the value 1
    is at least Low and at most High for all sequences of K consecutive 
    variables/values in ZeroOnes. ZeroOnes are 0/1 variables (or itnegers), 
    i.e. they have the domain [0,1]. 

    The ZeroOnes can be interpreted as the fulfillment of various
    conditions if the variables are linked to these conditions. For example,
    sequence/5 is implemented by linking the N ZeroOnes variables to a 
    matching collection of N finite domain `original' variables using 
    element/3 constraints to constrain the ZeroOnes to be 1 if the 
    corresponding original value takes one of the specified values. The
    ZeroOnes can then be used in further constraint reasoning.

    Note: this constraint is different from sequence/4 in lib(fd).

    This is currently a prototype -- the constraint has not been tested
    very extensively and little effort has been spent to optimise performance.
    We welcome any feedback on using this constraint.


See Also
   sequence / 5, fd : element / 3, fd_global : sequence_total / 6, fd_global : sequence_total / 7
