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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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23
Task/Multi-base-primes/Raku/multi-base-primes-1.raku Normal file
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use Math::Primesieve;
my $sieve = Math::Primesieve.new;
my %prime-base;
my $chars = 4; # for demonstration purposes. Change to 5 for the whole shmegegge.
my $threshold = ('1' ~ 'Z' x $chars).parse-base(36);
my @primes = $sieve.primes($threshold);
%prime-base.push: $_ for (2..36).map: -> $base {
$threshold = (($base - 1).base($base) x $chars).parse-base($base);
@primes[^(@primes.first: * > $threshold, :k)].race.map: { .base($base) => $base }
}
%prime-base.=grep: +*.value.elems > 10;
for 1 .. $chars -> $m {
say "$m character strings that are prime in maximum bases: " ~ (my $e = ((%prime-base.grep( *.key.chars == $m )).max: +*.value.elems).value.elems);
.say for %prime-base.grep( +*.value.elems == $e ).grep(*.key.chars == $m).sort: *.key;
say '';
}

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Task/Multi-base-primes/Raku/multi-base-primes-2.raku Normal file
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use Math::Primesieve;
use Base::Any;
my $chars = 4;
my $check-base = 62;
my $threshold = $check-base ** $chars + 20;
my $sieve = Math::Primesieve.new;
my @primes = $sieve.primes($threshold);
my %prime-base;
%prime-base.push: $_ for (2..$check-base).map: -> $base {
$threshold = (($base - 1).&to-base($base) x $chars).&from-base($base);
@primes[^(@primes.first: * > $threshold, :k)].race.map: { .&to-base($base) => $base }
}
%prime-base.=grep: +*.value.elems > 10;
for 1 .. $chars -> $m {
say "$m character strings that are prime in maximum bases: " ~ (my $e = ((%prime-base.grep( *.key.chars == $m )).max: +*.value.elems).value.elems);
.say for %prime-base.grep( +*.value.elems == $e ).grep(*.key.chars == $m).sort: *.key;
say '';
}