use strict;
use warnings;

my @array1 = (1, 3, 5, 8, 10);

print ((join ", ", @array1) . "\n");
print "Found 0 at " . BinSearch (0, \&cmpFunc, \@array1) . "\n";
print "Found 1 at " . BinSearch (1, \&cmpFunc, \@array1) . "\n";
print "Found 2 at " . BinSearch (2, \&cmpFunc, \@array1) . "\n";
print "Found 5 at " . BinSearch (5, \&cmpFunc, \@array1) . "\n";
print "Found 8 at " . BinSearch (8, \&cmpFunc, \@array1) . "\n";
print "Found 10 at " . BinSearch (10, \&cmpFunc, \@array1) . "\n";
print "Found 11 at " . BinSearch (11, \&cmpFunc, \@array1) . "\n\n";

my @array2 = (1, 3, 5, 8,);

print ((join ", ", @array2) . "\n");
print "Found 0 at " . BinSearch (0, \&cmpFunc, \@array2) . "\n";
print "Found 1 at " . BinSearch (1, \&cmpFunc, \@array2) . "\n";
print "Found 2 at " . BinSearch (2, \&cmpFunc, \@array2) . "\n";
print "Found 5 at " . BinSearch (5, \&cmpFunc, \@array2) . "\n";
print "Found 8 at " . BinSearch (8, \&cmpFunc, \@array2) . "\n";
print "Found 9 at " . BinSearch (9, \&cmpFunc, \@array2) . "\n";


sub cmpFunc
{
my ($index, $arrayRef, $target) = @_;
my $item = $$arrayRef[$index];

return $item <=> $target;
}