Home Backend Development PHP Tutorial PHP冒泡排序算法代码详细解读_PHP

PHP冒泡排序算法代码详细解读_PHP

Jun 01, 2016 pm 12:14 PM
Bubble Sort

复制代码 代码如下:
$arr = array(345,4,17,6,52,16,58,69,32,8,234);
$n = count($arr);
for($i=1;$i//其中的为什么$n-1是因为数组是从0开始计算的
//接下来是第一次内循环
for($j=$n-1;$j>=$i;$j--)
{
//如果$arr[10]//temp = $arr[9];
if($arr[$j]//$temp 暂时先把小的值放起来
$temp = $arr[$j-1];
//这个时候开始要交换位置了
$arr[$j-1] = $arr[$j];
//$arr[9] = $arr[10]的值
$arr[$j] = $temp;
//$arry[10]的值等于$arr[9]的值
//这个时候就要开始交换位置了
}
}
}
?>
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