From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=unavailable autolearn_force=no version=3.4.4 X-Received: by 10.180.106.161 with SMTP id gv1mr4154770wib.4.1367103280657; Sat, 27 Apr 2013 15:54:40 -0700 (PDT) X-Received: by 10.49.109.34 with SMTP id hp2mr376998qeb.33.1367103280227; Sat, 27 Apr 2013 15:54:40 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!mx05.eternal-september.org!feeder.eternal-september.org!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!usenet-fr.net!proxad.net!feeder1-2.proxad.net!209.85.212.216.MISMATCH!bx2no6912574wib.1!news-out.google.com!hg5ni25646wib.1!nntp.google.com!bx2no6912572wib.1!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Sat, 27 Apr 2013 15:54:40 -0700 (PDT) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=134.240.94.19; posting-account=CZZpzgoAAAAoaHoNNp9zhY9EzQgEmxhU NNTP-Posting-Host: 134.240.94.19 References: <87c89205-7fee-4d88-b4ab-08d26c03219b@googlegroups.com> <99d9a17c-ed8d-4c28-90d0-6543b511cb87@googlegroups.com> <4c3eca49-8ee6-4518-9968-879c08b828f6@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <807cc2f4-b8d7-4003-815a-41df959aa909@googlegroups.com> Subject: Re: Depth First Search of a Char_Matrix? From: Alex Injection-Date: Sat, 27 Apr 2013 22:54:40 +0000 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Xref: news.eternal-september.org comp.lang.ada:15194 Date: 2013-04-27T15:54:40-07:00 List-Id: On Saturday, April 27, 2013 3:05:30 PM UTC-4, Shark8 wrote: > On Saturday, April 27, 2013 10:51:44 AM UTC-6, Alex wrote: >=20 > >=20 >=20 > > Thanks! So I am given the function signature, not really a function bod= y that looks like this >=20 > >=20 >=20 > > function Count_Alive(Board : Char_Matrix) return Integer is >=20 > > M : Char_Matrix :=3D Board; =20 >=20 > > begin >=20 > > return -999; >=20 > > end Count_Alive; >=20 > >=20 >=20 > >=20 >=20 > > So I understand much of your logic, but I am given a matrix of characte= rs defined as such: >=20 > >=20 >=20 > > type Char_Matrix is array(Positive range <>, Positive range <>) of Char= acter; >=20 > >=20 >=20 > > So could you give me like an algorithm in words on what I need to do in= stead of giving me the answer in code? >=20 >=20 >=20 > The algorithm is much the same, just substitute a "Piece'(Color=3D>Black)= " for 'B', "Piece'(Color=3D>White)" for 'W', and the space/'.'/whatever for= the null. (Your handling of null and such will have to change, but it's th= e same idea as in the code already given: there's a board-position that mig= ht have a piece, if it does that piece is either black or white and either = alive or dead.) I am just still a little confused. I know how to do a DFS if I actually ha= ve a Graph Data Type with nodes and edges but I do not have that. I am giv= en the following type Char_Matrix is array(Positive range <>, Positive range <>) of Characte= r; and function Count_Alive(Board : Char_Matrix) return Integer is begin return -999; end Count_Alive;=20 The Char_Matrix will look something like this: /////// /WW.BB/ /.WWWW/ /WWBBB/ /BBBWW/ /WWBW./ /////// A '/' is off the board, a 'W' is a white piece, a 'B' is a black piece and = a '.' is an empty space on the board. A piece is alive if it is next to an= empty space ('.') or if it is next to an alive piece of the same color. Wh= at are the nodes and edges and how do you traverse this using DFS to count = the number of Alive pieces and number of Dead pieces? =20