Is it possible to use perl code to find the total number of positions where they differ and where they are alike?

Of course.

Here is one straight forward approach: 

#!/usr/bin/perl

my ($a, $b, $c) = qw (AAATGCCTT AAAAGCGTC AAAGGCGTC);
my ($similar, $dissimilar); 
for (0 .. length($a)-1) {
    if (substr($a,$_,1) eq substr($b, $_, 1) and substr($b, $_, 1) eq 
+substr($c, $_, 1)) {
        print "MATCH";
        $similar ++;
    } else {
        print "NO MATCH";
        $dissimilar ++; 
    }
    print " at position $_\n";
}
print "There were " . $similar . " similar and " . $dissimilar . " dis
+similar.\n";

[download]
-sauoq
"My two cents aren't worth a dime.";

In reply to Re: Is it possible to find the number of matching and non-matching positions in strings using perl code? by sauoq
in thread Is it possible to find the number of matching and non-matching positions in strings using perl code? by supriyoch_2008

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