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一个容易的数学题

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOriginal: 2016-06-13 12:40:16889browse

一个简单的数学题
if (empty($_GET['shu']))
{
?>

}
$n=$_GET["shu"];

?>

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------解决方案--------------------
按你级数：1、1、2、3、5、8... 的描述，这不是博立叶级数而是斐波纳契数列
于是有

echo join(',', Fibonacci(10));<br />
<br />
function Fibonacci($n) {<br />
  for($i=0; $i<=$n; $i++)<br />
    if($i <2) $r[] = 1;<br />
    else $r[] = $r[$i-1] + $r[$i-2];<br />
  return $r;<br />
}

1,1,2,3,5,8,13,21,34,55,89

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一个容易的数学题

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