How does 16 second/million (both ways) including sub call overhead compare?
#! perl -slw
use strict;
use Time::HiRes qw[ time ];
my @c = (' ', '0'..'9', 'A'..'Z' );
sub fromB37 {
my $n = shift;
join '', map {
my $c = $n %37;
$n = int( $n / 37 );
$c[ $c ];
} 1 .. 6;
}
my %c = map{ $c[ $_ ] => $_ } 0 .. 36;
sub toB37 {
my $n = 0;
$n = $n * 37 + $c{$_} for reverse unpack '(a)*', $_[0];
return $n;
}
my $start = time;
for ( 1 .. 1e6 ) {
my $n = int( rand 37**6 );
$n == toB37( fromB37( $n ) ) or die $n;
}
printf "Took %.3f second\n", time() - $start;
__END__
C:\test>junk45
Took 16.404 second
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
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