project-euler / project-euler / 36.pl

#!/usr/bin/perl 

use strict;
use warnings;

my $count;
my $sum = 0;
foreach my $n (1 .. 999_999)
{
    if (    ($n&0x1)
         && (scalar(reverse($n)) eq $n)
    )
    {
        my $b = sprintf("%b", $n);
        if (scalar(reverse($b)) eq $b)
        {
            $count++;
            $sum += $n;
        }
    }
}
print "$count <=> $sum\n";
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
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