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/* The Computer Language Shootout
http://shootout.alioth.debian.org/
contributed by Isaac Gouy (Scala novice)
*/
object sieve {
def main(args: Array[String]) = {
var n = toPositiveInt(args);
val start = 2;
val stop = 8192;
val isPrime = new Array[Boolean](stop+1);
var count: Int = 0;
while (n>0) {
count = 0;
for (i <- Iterator.range(start,stop+1))
isPrime(i)=true;
for (i <- Iterator.range(start,stop+1)) {
if( isPrime(i) ) {
var k = i+i;
while (k<=stop) { isPrime(k)=false; k=k+i; }
count = count+1;
}
}
n=n-1;
}
Console.println("Count: " + count);
}
private def toPositiveInt(s: Array[String]) = {
val i =
try { Integer.parseInt(s(0)); }
catch { case _ => 1 }
if (i>0) i; else 1;
}
}
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