@res = map { $_ - shift(@arr2) } @arr1;

[download]
Note that @arr2 will be empty after that. You can use: 
my $i = 0;
@res = map { $_ - $arr2[$i++] } @arr1;

[download]
if you want to preserve @arr2

In reply to Re: compare arrays numbers by zwon
in thread compare arrays numbers by nicholaspr

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