FUN with Matlab

zhupolongjoe · #1 $Old$ February 21st, 2009, 06:53 PM

I need a Matlab function that finds the last place in a line where a double character appears (that is, where the same character appears twice in a row)

So if the function is called locateDouble, locateDouble('adcdccd') should return 5 since inxes 5 is the first charcter of the last double character.
I posted my attempt at the program below, but it won't work.

function double=findDouble(line)
place=length(line);
while place>0;
for j=1:length(line)-1;
if j~==j+1
j=j+1
end
end
end

CaptainBlack · #2 $Old$ February 23rd, 2009, 09:31 AM

Quote:

Originally Posted by zhupolongjoe $View Post$

I need a Matlab function that finds the last place in a line where a double character appears (that is, where the same character appears twice in a row)

So if the function is called locateDouble, locateDouble('adcdccd') should return 5 since inxes 5 is the first charcter of the last double character.
I posted my attempt at the program below, but it won't work.

function double=findDouble(line)
place=length(line);
while place>0;
for j=1:length(line)-1;
if j~==j+1
j=j+1
end
end
end

try this:

Code:

 
aa='asdgghjklloperyyzt'
 
ll=length(aa)
 
aa1=aa(1:ll-1);
aa2=aa(2:ll);
 
zz=(aa1==aa2)
 
kk=find(zz)

Now try to use this idea.

CB