Created
March 16, 2019 16:35
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shell_sort
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#!/usr/bin/env perl | |
use strict; | |
use warnings; | |
use feature 'say'; | |
use DDP { deparse => 1 }; | |
my $time = time; | |
my @seeds; | |
for (1..100){ | |
push(@seeds, int(rand(100))); | |
} | |
#p @seeds; | |
for my $i (reverse(1..5)){ | |
my $group_index = []; | |
my $size = scalar @seeds; | |
for my $j (0..($i - 1)){ | |
my $k = $j; | |
my $index = []; | |
while ($k <= ($size - 1)){ | |
push (@$index, $k); | |
$k += $i; | |
} | |
push(@$group_index, $index); | |
} | |
for my $group (@$group_index){ | |
bubble_sort(\@seeds, $group); | |
}; | |
} | |
#p @seeds; | |
sub bubble_sort{ | |
my $seeds_refs = shift; | |
my $index_refs = shift; | |
my $size = scalar @$index_refs; | |
for my $i (reverse(0..($size - 2))){ | |
for my $j (0..$i){ | |
my $now_index = $index_refs->[$j]; | |
my $next_index = $index_refs->[$j + 1]; | |
if ($seeds_refs->[$now_index] > $seeds_refs->[$next_index]){ | |
my $tmp = $seeds_refs->[$now_index]; | |
$seeds_refs->[$now_index] = $seeds_refs->[$next_index]; | |
$seeds_refs->[$next_index] = $tmp; | |
} | |
} | |
} | |
} | |
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