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Re: Re: comparing strings

by Anonymous Monk
on Oct 30, 2002 at 16:26 UTC ( [id://209130]=note: print w/replies, xml ) Need Help??


in reply to Re: comparing strings
in thread comparing strings

Thanks blokhead, But I am still having a few problems... I incorporated the snippet you gave me which works fine apart from it doesn't print the correct no. of *'s to correspond to the number of mismatches! This is what i did its slightly different from yours. 

for ($dna_counter = 0; $dna_counter < $length_dna ; $dna_counter++ ) {

 if (substr(@lines, $_, 1) eq substr (@lines2, $_, 1))  {

 print '';
}

else {

print "*";
}
}
print "\n";

[download]

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Re: Re: Re: comparing strings
by petral (Curate) on Oct 30, 2002 at 17:52 UTC
    Of course, if you're using arrays, you just need
    if ($lines{$_] eq $lines2[$_]) {

    [download]
    The following will replace the non-matching chars in the string  $str1 with "*" (and leave the matching chars) by converting $str2 to a regex:
    $str2 =~ s/./(?:($&)|.)/g;

print map{$_||'*'} $str1 =~ /$str2/

    [download]


      p
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Re: Re: Re: comparing strings
by graff (Chancellor) on Oct 31, 2002 at 04:47 UTC
    This is what i did its slightly different from yours. 
    ...
  if (substr(@lines, $_, 1) eq substr (@lines2, $_, 1))
...

    [download]
     Well, that's actually way different from what Blockhead was doing -- he was using "substr()" on a scalar ($line); substr() is not supposed to be used on an array (@lines).
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