Hi,

All these approches are fine, but one seems to forget that a word can contain the character multiple times. I would follow an entire new direction. 

my $word="cacao";
my @word=split ('',$word);
my @string=('_') x scalar @word;
my $char="c";
map { $string[$_] = $char if $word[$_] eq $char } 0..$#word;
print @string;

[download]
prints
c_c__

So, instead of working with strings, I would work with arrays. I even think this is faster than multiple substr lookups, but I am not sure.
---------------------------
Dr. Mark Ceulemans
Senior Consultant
IT Masters, Belgium

In reply to Re: Character positioning by mce
in thread Character positioning by Anonymous Monk

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