function?[H]?=?alist2sparse（fname）
%?reads?binary?parity?check?matrix?in?“alist“?format?from?file?FNAME?and
%?converts?it?to?sparse?matrix?used?in?MATLAB?routines.
%?This?is?an?interface?to?matrices?at?http://wol.ra.phy.cam.ac.uk/mackay/codes/
%
%?Example
%????????[H]?=?alist2sparse（‘A‘）;???%?A?is?the?ascii?file?in?alist?format


%???Copyright?（c）?1999?by?Igor?Kozintsev?igor@ifp.uiuc.edu
%???$Revision:?1.1?$??$Date:?2000/03/23?$?Bug?fixed?by?Hatim?Behairy

fid?=?fopen（fname）;
n?=?fscanf（fid‘%d‘1）;
m?=?fscanf（fid‘%d‘1）;
maxinrow?=?fscanf（fid‘%d‘1）;?
junk?=?fscanf（fid‘%d‘1）;?%?no?need
num?=?fscanf（fid‘%d‘[1?n]）;?%?number?of?elements?in?rows

num2（1:n）=maxinrow;????
junk?=?fscanf（fid‘%d‘[1?m]）;?%?no?need

position?=?zeros（nmaxinrow）;
for?i=1:n
???for?j=1:n

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????2203??2012-10-10?17:12??Progressive?edge?growth\1st_girth_14.mat
?????文件????????2750??2012-10-10?17:14??Progressive?edge?growth\2nd_girth_8.mat
?????文件????????3727??2011-08-07?19:59??Progressive?edge?growth\2peg_504_girth=8_dvmax=5.mat
?????文件????????2555??2012-10-10?17:18??Progressive?edge?growth\3rd_girth_8.mat
?????文件????????6253??2012-10-10?17:20??Progressive?edge?growth\4th_girth_8.mat
?????文件????????8031??2012-10-10?17:26??Progressive?edge?growth\5th_girth_8.mat
?????文件????????7430??2012-10-10?17:31??Progressive?edge?growth\6th_girth_10.mat
?????文件????????2095??2010-06-11?23:10??Progressive?edge?growth\A1.txt
?????文件???????29314??2010-06-12?04:57??Progressive?edge?growth\A4.txt
?????文件????????1119??2011-08-03?18:33??Progressive?edge?growth\ace1.mat
?????文件????????1102??2011-08-03?20:06??Progressive?edge?growth\ace10.mat
?????文件????????1127??2011-08-03?20:07??Progressive?edge?growth\ace11.mat
?????文件????????1127??2011-08-03?20:10??Progressive?edge?growth\ace12.mat
?????文件????????1128??2011-08-03?20:13??Progressive?edge?growth\ace13.mat
?????文件????????1125??2011-08-03?22:32??Progressive?edge?growth\ace14.mat
?????文件????????1128??2011-08-03?18:56??Progressive?edge?growth\ace2.mat
?????文件????????1102??2011-08-03?19:14??Progressive?edge?growth\ace3.mat
?????文件????????1102??2011-08-03?19:54??Progressive?edge?growth\ace4.mat
?????文件????????1102??2011-08-03?19:57??Progressive?edge?growth\ace5.mat
?????文件????????1102??2011-08-03?19:58??Progressive?edge?growth\ace6.mat
?????文件????????1127??2011-08-03?20:00??Progressive?edge?growth\ace7.mat
?????文件????????1102??2011-08-03?20:03??Progressive?edge?growth\ace8.mat
?????文件????????1102??2011-08-03?20:04??Progressive?edge?growth\ace9.mat
?????文件????????1079??2009-03-24?00:29??Progressive?edge?growth\alist2sparse.m
?????文件????????1073??2011-07-24?19:27??Progressive?edge?growth\bitwise_girth_calculation.m
?????文件????????1475??2010-07-13?20:56??Progressive?edge?growth\CalcGirth.m
?????文件?????????787??2011-08-02?19:57??Progressive?edge?growth\calculate_ace.m
?????文件????????1404??2011-08-02?21:13??Progressive?edge?growth\calculate_ace_peg.asv
?????文件????????1407??2011-08-02?20:43??Progressive?edge?growth\calculate_ace_peg.m
?????文件?????????207??2010-10-30?18:00??Progressive?edge?growth\cnassigned.asv
?????文件?????????253??2010-10-30?18:10??Progressive?edge?growth\cnassigned.m
............此處省略209個文件信息