Slice an array by referencing the index in a sub range
#!/usr/bin/perl -w
use strict;
my @sales = (126, 121, 129, 110, 113, 121, 112, 105, 716, 111, 118, 101);
my @months = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
print "@months[3..5]\n@sales[3..5]\n";
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