I could not resist giving a functional and expensive solution to the problem with pairwise function from List::MoreUtils.
my $mask = '001111100';
my $str = 'AGACGAGTA';
my @mask = split( '', $mask );
my @str = split( '', $str );
my $masked = join '', pairwise { $a ? 'x' : $b } @mask, @str;
print "Masked: $masked\n";
And now using regexes:
my $mask = '001111100';
my $str = 'AGACGAGTA';
my $masked = '';
while ( $mask =~ /\G(.)/gc ) { # walk the mask
my $bit = $1;
if ( $str =~ /\G(.)/gc ) { # walk the string to be masked
$masked .= $bit ? 'x' : $1;
}
}
print "Masked: $masked\n";
Probably it could be improved in space if mask is represented
as a bit vector and there is an iterator to walk the mask
just like $mask =~ /\G(.)/gc is doing.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|