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Population count: Difference between revisions
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odious : 1 2 4 7 8 11 13 14 16 19 21 22 25 26 28 31 32 35 37 38 41 42 44 47 49 50 52 55 56 59
</pre>
=={{header|Mathematica}}==
<lang Mathematica>popcount[n_Integer] := IntegerDigits[n, 2] // Total
Print["population count of powers of 3"]
popcount[#] & /@ (3^Range[0, 30])
(*******)
evilQ[n_Integer] := popcount[n] // EvenQ
evilcount = 0;
evillist = {};
i = 0;
While[evilcount < 30,
If[evilQ[i], AppendTo[evillist, i]; evilcount++];
i++
]
Print["first thirty evil numbers"]
evillist
(*******)
odiousQ[n_Integer] := popcount[n] // OddQ
odiouscount = 0;
odiouslist = {};
i = 0;
While[odiouscount < 30,
If[odiousQ[i], AppendTo[odiouslist, i]; odiouscount++];
i++
]
Print["first thirty odious numbers"]
odiouslist</lang>
{{out}}
<pre>population count of powers of 3
{1, 2, 2, 4, 3, 6, 6, 5, 6, 8, 9, 13, 10, 11, 14, 15, 11, 14, 14, 17, 17, 20, 19, 22, 16, 18, 24, 30, 25, 25, 25}
first thirty evil numbers
{0, 3, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 24, 27, 29, 30, 33, 34, 36, 39, 40, 43, 45, 46, 48, 51, 53, 54, 57, 58}
first thirty odious numbers
{1, 2, 4, 7, 8, 11, 13, 14, 16, 19, 21, 22, 25, 26, 28, 31, 32, 35, 37, 38, 41, 42, 44, 47, 49, 50, 52, 55, 56, 59}</pre>
=={{header|PARI/GP}}==
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