4-7 ?????弧?使??

pGڭ̭nPɤƭӳqΦAiHϥΡu|vNL̦_ӡAӹFuΡv]OR^޿BĪGAҦpApGڭ̭nPɤHΥdXBҦrBqܸXAiѨUCdҡG

Example 1: 04-qιB⦡/regExp16.mstring = '1234-5678-9012-3456 and A123456789 and 5715131'; pattern = '\d{4}-\d{4}-\d{4}-\d{4}|[A-Z]\d{9}|\d{7}'; [start, finish] = regexp(string, pattern); fprintf('Matched substrings:\n'); for i=1:length(start) fprintf('\t%d: %s\n', i, string(start(i):finish(i))); endMatched substrings: 1: 1234-5678-9012-3456 2: A123456789 3: 5715131

YOni OR B⪺qΦ@qAڭ̴NݭnϥΤpAӶiTWdAҦpUCdҡAiHPɤ Chapter M SectionAHΫ򪺼ƦrG

Example 2: 04-qιB⦡/regExp17.mstring = 'I like Chapter 12, particularly Section 4!'; pattern = '(Chapter|Section) [1-9]\d?'; [start, finish] = regexp(string, pattern); fprintf('Matched substrings:\n'); for i=1:length(start) fprintf('\t%d: %s\n', i, string(start(i):finish(i))); endMatched substrings: 1: Chapter 12 2: Section 4

pA]iHΨӶi歫ƦrꪺAԨe@`C

FΨӳWd諸覡~ApA٦@ӫD`n\ANOiHNpAlrǦ^ӡAD`AΩSwlrꪺCoTOg regexp OĤTӿXܼƩҶǦ^AҦpG

Example 3: 04-qιB⦡/regExp20.mstring = 'I bet there is a bat on the boat'; pattern = 'b(\w*)t'; [start, finish, token] = regexp(string, pattern); fprintf('There are %d matched substrings:\n', length(start)); for i=1:length(start) fprintf('\t%d: matched="%s", token="%s"\n', i, ... string(start(i):finish(i)), string(token{i}(1):token{i}(2))); endThere are 3 matched substrings: 1: matched="bet", token="e" 2: matched="bat", token="a" 3: matched="boat", token="oa"

bWҤAtoken NO b M t ҧrC

qΦbϥΡugߤvɡA|ĥΡuVVgvhAҦpbϥγqΦ 'a(.*)b(.*)d' Ӥr 'a--b---b----d' ɡAk䪺A|O '--b---' M '----'AӤO'--' M '---b----'CYnܡuVVgvhAiHϥΰݸӫw̤pAШUCdҡG

Example 4: 04-qιB⦡/regExp22.mstr = 'a--b---b----d'; pat1 = 'a(.*)b(.*)d'; % uVVgv [start, finish, token] = regexp(str, pat1); fprintf('uVVgvﵲGG\n'); for j=1:size(token{1},1) fprintf('\ttoken%d = "%s"\n', j, str(token{1}(j,1):token{1}(j,2))); end pat2 = 'a(.*?)b(.*)d'; % Qΰݸӭץ [start, finish, token] = regexp(str, pat2); fprintf('QΰݸӶiṳpvGG\n'); for j=1:size(token{1},1) fprintf('\ttoken%d = "%s"\n', j, str(token{1}(j,1):token{1}(j,2))); enduVVgvﵲGG token1 = "--b---" token2 = "----" QΰݸӶiṳpvGG token1 = "--" token2 = "---b----"

ϥΤpAөҭnrAO@ӫܦΪ\Cڭ̥iHQΦ\өs}MsrAobjMs@WAO@ӫܭnBJA]u`{v]S٬ Web Robot Web Crawler^N^ӫANOھںs}AӨMwUn`Ap̦]iھ Depth-first Search Breadth-first Search^л`ANiHܦhCҦpbڭ̪dҵ{A@Ӻɮ regExp.htmA䤺epUG

<html> <body> List of important links: <ul> <li>Homepage of MathWorks: <a href="http://www.mathworks.com">MathWorks</a>. <li>Homepage of Roger Jang: <a href="http://www.cs.nthu.edu.tw/~jang">Roger Jang</a>. <li>Homepage of Google: <a href="http://www.google.com">Google</a>. </ul> </body> </html>

Hs}ҦɮסAo쪺epUG

Q regexp OҶǦ^ӪĤTӿXܼơAڭ̥iHaXs}MsrAШUCdҡG

Example 5: 04-qιB⦡/linkExtract.mfileName = 'regExp.htm'; string=fileread(fileName); pattern = '<a href="(.*?)">(.*?)</a>'; [start, finish, token] = regexp(string, pattern); fprintf('ɮ "%s" X %d ӳsG:\n', fileName, length(start)); for i=1:length(start) fprintf('\t%d: srG"%s", s}G"%s"\n', ... i, string(token{i}(2,1):token{i}(2,2)), string(token{i}(1,1):token{i}(1,2))); end

bWzdҤASOn`NOApAݸONṳpvAܦpGإi઺ﱡpAڭ̷|쪺rVuVnAHKoͿ~C

Hint
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