How to find all letters before a character in a char variable

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Boris Chan
Boris Chan 2019-12-1
评论： Vladimir Sovkov 2019-12-1
I need to find a message hidden in a bunch of random characters. I have this secret message and I know that all the words are spaced inbetween the '#' character. I have been trying to use the regexp to find all the letters in between every '#'
secretMes = ';,.T234h467e#i`12n390@%f&^%o1@45r1%^m]\a131@t2i*/-o+/1n#i*895n#t$5&&h1/!i@$$s#f18945@i2/le#i98s#c`$%o%^n77*f(=i(*d@!e1*/n--t+/*i1/2a@@l' ...
,'D/44o#n$%7o76@@t#s&*&&9h998o()-w#t=-++h=!2i@@s#t%%^o#a$()-=n12//*8y//8-o++/n00/7e' ...
,'H@!0a-0009v$%%e#a#w%^o^&n*!@d!~*e12//*r+*/8f1-/u00l#t0/8h%^a34$n%^&k()-s[}}g;;i<>v1/8i1@@n4%g#e$@v8998e**98r7^^y))(o--=n;:e';
toFind = '\w+(\#)?'
decrypt = regexp(secretMes,toFind,'match');
unfortuantely it doesn't seem to be giving me the desitred results
Ti1fo4mato1i8t5hisfiliconfidenti2lD4n7ts9wth2stoan88on7H00eawonder8ut8anksgiv8ngev9yone
does anyone know how to achieve this?

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回答（2 个）

Vladimir Sovkov
Vladimir Sovkov 2019-12-1
split(secretMes,'#')
  2 个评论
Boris Chan
Boris Chan 2019-12-1
Hi thanks for the input,
But this doesn't parse the words and the numbers apart.
Vladimir Sovkov
Vladimir Sovkov 2019-12-1
S=split(secretMes,'#');
S0=S{1}(S{1}>='A' & S{1}<='Z' | S{1}>='a' & S{1}<='z');
for k=2:numel(S)
S0 = strcat(S0,'_', S{k}(S{k}>='A' & S{k}<='Z' | S{k}>='a' & S{k}<='z'));
end
S0

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Stephen23
Stephen23 2019-12-1
>> secretMes = [';,.T234h467e#i`12n390@%f&^%o1@45r1%^m]\a131@t2i*/-o+/1n#i*895n#t$5&&h1/!i@$$s#f18945@i2/le#i98s#c`$%o%^n77*f(=i(*d@!e1*/n--t+/*i1/2a@@l' ...
'D/44o#n$%7o76@@t#s&*&&9h998o()-w#t=-++h=!2i@@s#t%%^o#a$()-=n12//*8y//8-o++/n00/7e' ...
'H@!0a-0009v$%%e#a#w%^o^&n*!@d!~*e12//*r+*/8f1-/u00l#t0/8h%^a34$n%^&k()-s[}}g;;i<>v1/8i1@@n4%g#e$@v8998e**98r7^^y))(o--=n;:e'];
>> C = regexp(secretMes,'#','split');
And checking:
>> C{:}
ans = ;,.T234h467e
ans = i`12n390@%f&^%o1@45r1%^m]\a131@t2i*/-o+/1n
ans = i*895n
ans = t$5&&h1/!i@$$s
ans = f18945@i2/le
ans = i98s
ans = c`$%o%^n77*f(=i(*d@!e1*/n--t+/*i1/2a@@lD/44o
ans = n$%7o76@@t
ans = s&*&&9h998o()-w
ans = t=-++h=!2i@@s
ans = t%%^o
ans = a$()-=n12//*8y//8-o++/n00/7eH@!0a-0009v$%%e
ans = a
ans = w%^o^&n*!@d!~*e12//*r+*/8f1-/u00l
ans = t0/8h%^a34$n%^&k()-s[}}g;;i<>v1/8i1@@n4%g
ans = e$@v8998e**98r7^^y))(o--=n;:e

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