Can any body tell me how to find duplicate lines in C
i have tried to find using Binary tree and Text files but not suceeded
..
It works for Word but not for lines
please help me
you can write suggetion to my email : rs******@gmail. com 5  2123 
Put the lines in an array,
sort the array by a) length of line, b) the line itself
iterate the array checking for duplicates.
Regards, Stephan
RS******@gmail. com wrote: Can any body tell me how to find duplicate lines in C
i have tried to find using Binary tree and Text files but not suceeded
.
It works for Word but not for lines
please help me
Your question isn't really a "C" question, but more an algorithm one.
comp.programmin g might be a better place to ask it.
Assuming you can slurp the whole file into an array (i.e. assuming
you don't need to work on really big files, etc), you could use
the following simple approach.
1) slurp file into array (look at fgets, or cbfalconer's ggets code)
2) sort the array (look at quicksort)
3) iterate through the array, comparing each line to the next (look at
strcmp)
I expect is a good enough approach. Write some code and come
back with it if you have problems.
you can write suggetion to my email : rs******@gmail. com
No thanks, I prefer to post :p
-David
"Christophe r Benson-Manica" writes: RS******@gmail. com wrote:
i have tried to find using Binary tree and Text files but not suceeded
How sad. Are you sure you didn't simply make a mistake in your code?
I doubt that there are any real problems in doing this using a tree; it may
not be the best way but it is surely *a* way. Or did you mean you just gave
up and stopped working on it? BTW, the proper forum for this question is
comp.programmin g. RS******@gmail. com writes: Can any body tell me how to find duplicate lines in C
i have tried to find using Binary tree and Text files but not suceeded
.
It works for Word but not for lines
The first thing you should do is figure out *why* it works for words
but not for lines. The code that checks for duplicates should just be
operating on strings; it shouldn't matter whether the strings are
words or lines.
Show us some code, and maybe we can help you figure out what the
problem is.
(If you're having problems with the algorithm, try comp.programmin g;
if you've having problems implementing the algorithm in C, you're in
the right place.)
--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
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