Sort
1. Purpose. I modified the NAD-3 set of programs in Volume 11 to suit
the
following need. Messages and letters in the Coast Guard are marked with
a
Standard Subject Identifier Code (SSIC) and also contain a statement of
the
subject matter near the top. These two clues are the best when a
radioman
is determining who to route incoming messages to within a
command
organization. Records containing fields titled SUBJect, SSIC,
Action
addressee, Info addressee are built and updated by a modification of
the
NAD-3 program.
That program collection (ALPHABET) is also used
to
alphabetize and print the list in order by subject.
SORT.PAS
(SRTPRT.PAS
is the printer subroutine to facilitate quick modification) sorts the
list
by SSIC and makes a second printout. These two printouts, posted in
the
communications center, are referenced by the duty radioman.
2. The program. This is a direct descendant of the ISORTV1 program
in
Volume 4. Instead of short strings from the console, complete records
from
a file are sorted using an insertion sort.
Performance in terms
of
throughput is much faster than the algorithm used in ALPHABET; not
quite
sure why, but this works well. The I/O routines are Pascal/Z, but
the
remainder should be standard.
3. Credits to Ray Penley and Craig Rudlin for the original programs.
Rex
A Buddenberg, 1910 Ash Street, North Bend, Or 97459.