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PHP兑现各种排序

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Release: 2016-06-13 10:41:21
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PHP实现各种排序

<?php /** * 各种排序 * @author zhaojaingwei * @since 2011/11/21 16:14 * */$list = array(3,5,1,2,10,8,15,19,20);//快排function fast(&$list, $low, $high){    if($high - $low > 5){        while($low  $temp){            $high --;        }        $list[$low] = $list[$high];        while($low  0; $i --){        swap($list, $i, 0);        heapfy($list, 0, $i - 1);     }}//创建堆function buildHeap(&$list){    for($i = (count($list) - 2)/2; $i >= 0; $i --){         heapfy($list, $i, count($list) - 1);      }}//维护堆function heapfy(&$list, $low, $high){    $temp = $list[$low];    for($i = ($low * 2 + 1); $i = 1){        for($i = $code; $i = 0 && $list[$j] > $temp; $j -= $code){                    $list[$j + $code] = $list[$j];                    $a ++;                 }                $list[$j + $code] = $temp;            }        }        $code = $code/3;    }    echo $a;}//直接插入排序function insert(&$list){    $a = 0;    for($i = 1; $i  $temp; $j --){                $a ++;                $list[$j + 1] = $list[$j];             }                        $list[$j + 1] = $temp;        }    }    echo $a;}//简单选择排序function select(&$list){    $a = 0;    for($i = 0; $i = $i; $j --){            $a ++;            if($list[$j] > $list[$j + 1]){                $swap = TRUE;                swap($list, $j, $j + 1);            }        }    }    echo $a;}//移动或交换函数function swap(&$list, $i, $j){    $temp = $list[$i];    $list[$i] = $list[$j];    $list[$j] = $temp;}?>
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