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输出小于1000的素数

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Release： 2016-05-25 16:59:59
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输出小于1000的素数

for($i=2,$n=0;$i<1001;$i++){
    $isprime = true;
    for($j=2;$j<=sqrt($i);$j++){
        if($i % $j == 0){
            $isprime = false;
            break;
        }
    }
    if($isprime){
        echo $i," ";
        $n++;
        echo ($n % 10 ==0) ? "<br />" : &#39;&#39;;
    }
}
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