PHP算法之冒泡排序
闲来无事的时候,就苦思冥想.想的昏天暗地,不知所谓. 话说这天突然想到大学,刚学C的那会的时候.老师讲的冒泡排序.然后我就开始琢磨着用PHP来实现一记. /** * 冒泡排序 (一维数组) * 两两比较待排序数据元素的大小,发现两个数据元素的次序相反时即进行交换,直
闲来无事的时候,就苦思冥想.想的昏天暗地,不知所谓.
话说这天突然想到大学,刚学C的那会的时候.老师讲的冒泡排序.然后我就开始琢磨着用PHP来实现一记.
/** * 冒泡排序 (一维数组) * 两两比较待排序数据元素的大小,发现两个数据元素的次序相反时即进行交换,直到没有反序的数据元素为止 * 设想被排序的数组R[1..N] 垂直竖立,将每个数据元素看作有重量的气泡,从下往上扫描数组,凡扫描违反原则的轻气泡,就使其向上"漂浮".如此反复进行. * 直到最后任何两个气都是轻者在上,重者在下为止. */ function bubble_sort($arr) { $count = count($arr); if($count = 0 || is_array($arr)) { echo 'NOT NULL ARRAY'; return false; } for($i = 0; $i $i; $j--) { if($arr[$j] <p class="copyright"> 原文地址:PHP算法之冒泡排序, 感谢原作者分享。 </p>

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