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Lucky and even lucky numbers: Difference between revisions
→{{header|Perl 6}}: add entry
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=={{header|Perl 6}}==
<lang perl6>sub luck(\a,\b) {
gather {
my @taken = take a;
my @rotor;
my $i = b;
loop {
loop (my $j = 0; $j < @rotor; $j++) {
--@rotor[$j] or last;
}
if $j < @rotor {
@rotor[$j] = @taken[$j+1];
}
else {
push @taken, take $i;
push @rotor, $i - @taken;
}
$i += 2;
}
}
}
constant @lucky = luck(1,3);
constant @evenlucky = luck(2,4);
subset Luck where m:i/^ 'even'? 'lucky' $/;
multi MAIN (Int $num where * > 0, Luck $lucky = 'lucky') {
say @::(lc $lucky)[$num-1];
}
multi MAIN (Int $first where * > 0, Int $last where * > 0, Luck $lucky = 'lucky') {
say @::(lc $lucky)[$first-1 .. $last - 1];
}
multi MAIN (Int $min where * > 0, Int $m-max where * < 0, Luck $lucky = 'lucky') {
say grep * >= $min, (@::(lc $lucky) ...^ * > abs $m-max);
}</lang>
{{out}}
<pre>$ ./lucky 20 lucky
79
$ ./lucky 20 evenlucky
76
$ ./lucky 1 20
1 3 7 9 13 15 21 25 31 33 37 43 49 51 63 67 69 73 75 79
$ ./lucky 1 20 evenlucky
2 4 6 10 12 18 20 22 26 34 36 42 44 50 52 54 58 68 70 76
$ ./lucky 6000 -6100
6009 6019 6031 6049 6055 6061 6079 6093
$ ./lucky 6000 -6100 evenLucky
6018 6020 6022 6026 6036 6038 6050 6058 6074 6090 6092
</pre>
=={{header|REXX}}==
<lang REXX>/*REXX program displays lucky or evenLucky integers (#'s or a # range).*/
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