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colomon/gist:fea0ec14fbf3ad02c5ed

Created July 1, 2014 10:50
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gistfile1.txt
sub is-happy($n) {
state %memory = 1 => True;
return %memory{$n} if %memory{$n}:exists;
%memory{$n} = False;
%memory{$n} = is-happy([+] $n.comb.map(* ** 2));
}
say (1..100).grep({ is-happy($_) });
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