Created
April 16, 2016 17:17
-
-
Save dogbert17/c510cc424c37450c7678db8624acc66d to your computer and use it in GitHub Desktop.
Causes problems when run with the --profile option
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# What is the sum of the numbers on the diagonals in a 1001 by 1001 spiral formed in the same way? | |
# real 10m52.262s | |
# user 10m37.848s | |
# sys 0m1.068s | |
# This is Rakudo version 2016.03-76-gb3b24bf built on MoarVM version 2016.03-84-g4afd7b6 | |
use v6; | |
my $size = 5; | |
my @mat[$size; $size]; | |
init-array(0, $size - 1, $size * $size); | |
say sum-diagonals; | |
#say (0..$size - 1).map(-> $idx { @mat[$idx; $idx] + @mat[$idx; $size - 1 - $idx]}).sum - 1; | |
sub init-array($r, $c, $val) { | |
@mat[$r; $c] = $val; | |
if $c - 1 >= 0 && @mat[$r; $c - 1] !~~ Int && !($r - 1 >= 0 && @mat[$r - 1; $c] !~~ Int) { # left | |
init-array($r, $c - 1, $val - 1); | |
} | |
elsif $r + 1 < $size && @mat[$r + 1; $c] !~~ Int { # down | |
init-array($r + 1, $c, $val - 1); | |
} | |
elsif $c + 1 < $size && @mat[$r; $c + 1] !~~ Int { # right | |
init-array($r, $c + 1, $val - 1); | |
} | |
elsif $r - 1 >= 0 && @mat[$r - 1; $c] !~~ Int { # up | |
init-array($r - 1, $c, $val - 1); | |
} | |
} | |
sub sum-diagonals { | |
my $sum = 0; | |
for (0..$size - 1) -> $idx { | |
$sum += @mat[$idx; $idx] + @mat[$idx; $size - 1 - $idx]; | |
} | |
return $sum - 1; # don't count the '1' in the middle twice | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment