C++ Sort()

bendeco13 · 11-02-2005, 10:46 PM

I'm using the sort function in my c++ program. This works great, but it sorts case-sensitive.
Here's what I'm using now:

Code:

sort(files.begin(), files.end());

Is there a way to sort case-insensitive ?

Thanks in advance,
Bendeco

anuode · 11-02-2005, 11:23 PM

you can convert all text chars to UP or to LOW and then sort(),now if is it case-insensitive?

bendeco13 · 11-02-2005, 11:26 PM

I figured it out.
It uses the same idea you mentioned anuode

For anyone else who wants to do this see:
http://www.cs.trinity.edu/~joldham0/...rint-sorted.cc
I couldn't get it to compile using this directly, I had to change the 'caseInsensitiveComp' function so it looked like this:

Code:

bool caseInsensitiveComp(string left, string right) {
  // Convert the strings to all lowercase.
  transform(left.begin(), left.end(), left.begin(), (int(*)(int))tolower);
  transform(right.begin(), right.end(), right.begin(), (int(*)(int))tolower);
  // Compare the strings.
  return left < right;          // string class has <
}

make sure you include <cctype> and <algorithm>

Hope this helps anyone else who has this problem.
Thanks,
Bendeco