tr/// can be used to count characters in a string. No need to loop through.

use warnings;
use strict;

print "LATCG-\n";

while(<DATA>) {
    print $. . tr/A// . tr/T// . tr/C// . tr/G// . tr/-// . "\n";
}

__DATA__
ATGAAAAAGAC
AGCTATCGCGA
TTGCAGTGGCA
CTGGCTGGTTT
CGCTACCGTAG
CGC-A---TAG

[download]

Output:

LATCG-
171120
232330
323240
405240
522430
621224

[download]

In reply to Re: What is wrong in this code??? by Lotus1
in thread What is wrong in this code??? by Anonymous Monk

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