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php实例:1到9之间三个数相加等于15

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Release: 2016-06-13 11:36:43
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$j = 0; $k = 0;$m = 0;
for ($i = 0;$i {
    $a1 = rand(1,9);
    $a2 = rand(1,9);
    $a3 = rand(1,9);
    if ($a1+$a2+$a3 === 15)
    {
        $m++;
        if($a1 === $a2 or $a1 === $a3 or $a2 === $a3)
        {
            echo "有重复的值".$a1."+".$a2."+".$a3."\n";
            $j++;
        }
        else
        {
            echo $a1."+".$a2."+".$a3."=15"."\n";
            $k++;
        }
    }
}
echo  "等于15的次数有".$m."次\n等于15但是有重复的次数有".$j."次\n等于15而且没有重复的次数".$k."次";

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