Bubble sort function

From , 5 Years ago, written in PHP, viewed 114 times.

//冒泡法
 
//数组默认的传递是值传递，而不是地址传递
//后面将讲到对象类型，对象默认的传递就是地址传递
 
//优化，将冒泡排序法封装成函数，利于以后使用
function bubbleSort( & $myarr)
{
    $temp = 0; //定义一个中间变量
    //外层循环
    for ($i = 0; $i < count($myarr) - 1; $i++)
    {
        for ($j = 0; $j < count($myarr) - 1 - $i; $j++)
        {
            if ($myarr[$j] > $myarr[$j + 1])
            {
                $temp = $myarr[$j];
                $myarr[$j] = $myarr[$j + 1];
                $myarr[$j + 1] = $temp;
            }
            
        }
    }
}
 
$arry = array(2, 6, -4, 7, 9, 0);
bubbleSort($arry);
print_r($arry);
 

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Bubble sort function

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