To use this function, first we need to convert the string into array, and using sort() function array will be at sorted order. Then using another function join() the array will be converted into string again. By the way, split() will make the string into array.
Here goes the example.
my $string = "7cc47ab2fac34278984cab446a8d0d2b";
print join('',sort(split(//,$string))) ."\n";
First splitting into array, then sort, and then back to array using join. For more Perl, you can read other topics from this blog http://icfun.blogspot.com/search/label/perl