NAME

       PGASortPop - Creates an (internal) array of indices according to one of three criteria.

DESCRIPTION

       If  PGA_POPREPL_BEST is used (the default) the array is sorted from most fit to least fit.
       If PGA_POPREPL_RANDOM_REP is used the indices in the  array  are  selected  randomly  with
       replacement.   If  PGA_POPREPL_RANDOM_NOREP  is used the indices in the array are selected
       randomly without replacement.  The function  PGASetPopReplaceType()  is  used  to  specify
       which strategy is used.  The indices of the sorted population members may then be accessed
       from the internal array via PGAGetSortedPopIndex().  This routine is typically used during
       population replacement.

INPUT PARAMETERS

       ctx    - context variable
       popindex
              - symbolic constant of the population from which to create the srted array.

OUTPUT PARAMETERS

       none

SYNOPSIS

       #include "pgapack.h"
       void  PGASortPop(ctx, pop)
       PGAContext *ctx
       int pop

LOCATION

       pop.c

EXAMPLE

       Example:
       Copy the five best strings from the old population into the new
       population.  The rest of the new population will be created by
       recombination, and is not shown.

       PGAContext *ctx;
       int i,j;
       :
       PGASetPopReplaceType(ctx,PGA_POPREPL_BEST)
       :
       PGASortPop(ctx, PGA_OLDPOP);
       for ( i=0; i < 5; i++) {
       j = PGAGetSortedPopIndex(ctx, i);
       PGACopyIndividual (ctx, j, PGA_OLDPOP, i, PGA_NEWPOP);
       :

                                             05/01/95                               PGASortPop(8)