You want to make sure that the whole string matches and not just a substring. You can use the "anchors" ^ (start of string) and $ (end of string) for that:

if($a[$i] =~ /^$b[$j]$/i)

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But if you want to compare the whole string, a direct comparison of the upper case variants is more straightforward: 

if(uc $a[$i] eq uc $b[$j]) {
...
}

[download]

In reply to Re: Comparing strings by Corion
in thread Comparing strings by tanyeun

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