25 lines
483 B
Plaintext
25 lines
483 B
Plaintext
var blob = use('blob')
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var math = use('math/radians')
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function eratosthenes (n) {
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var sieve = new blob(n, true)
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var sqrtN = number.whole(math.sqrt(n));
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for (i = 2; i <= sqrtN; i++)
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if (sieve.read_logical(i))
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for (j = i * i; j <= n; j += i)
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sieve.write_bit(j, false);
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return sieve;
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}
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var sieve = eratosthenes(10000000);
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stone(sieve)
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var c = 0
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for (var i = 0; i < sieve.length; i++)
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if (sieve.read_logical(i)) c++
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log.console(c)
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$stop() |