RosettaCodeData/Task/Population-count/CLU/population-count.clu

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pop_count = proc (n: int) returns (int)
p: int := 0
while n>0 do
p := p + n//2
n := n/2
end
return(p)
end pop_count
evil = proc (n: int) returns (bool)
return(pop_count(n)//2 = 0)
end evil
odious = proc (n: int) returns (bool)
return(~evil(n))
end odious
first = iter (n: int, p: proctype (int) returns (bool)) yields (int)
i: int := 0
while n>0 do
if p(i) then
yield(i)
n := n-1
end
i := i+1
end
end first
start_up = proc ()
po: stream := stream$primary_output()
for i: int in int$from_to(0,29) do
stream$putright(po, int$unparse(pop_count(3**i)), 3)
end
stream$putl(po, "")
for i: int in first(30, evil) do
stream$putright(po, int$unparse(i), 3)
end
stream$putl(po, "")
for i: int in first(30, odious) do
stream$putright(po, int$unparse(i), 3)
end
stream$putl(po, "")
end start_up