Created
March 16, 2019 16:48
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#!/usr/bin/env perl | |
use strict; | |
use warnings; | |
use feature 'say'; | |
use DDP { deparse => 1 }; | |
my @seeds; | |
for (1..100){ | |
push(@seeds, int(rand(100))); | |
} | |
my %hash; | |
@seeds = grep{!$hash{$_}++}@seeds; | |
my $target = int(rand(100)); | |
@seeds = sort {$a <=> $b} @seeds; | |
print join(',', @seeds) . "\n"; | |
my $s = 0; | |
my $e = (scalar @seeds) - 1; | |
my $i; | |
while ($s <= $e){ | |
$i = $s + int(($e - $s + 1) / 2); | |
if ($seeds[$i] == $target){ | |
print "$target found at $i\n"; | |
exit; | |
} elsif ($seeds[$i] > $target){ | |
$e = $i - 1; | |
} else { | |
$s = $i + 1; | |
} | |
} | |
print "$target not found\n"; |
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