Home > php教程 > php手册 > PHP实现常见排序

PHP实现常见排序

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Release: 2016-06-13 11:34:38
Original
1057 people have browsed it

//插入排序(一维数组)
function insert_sort($arr){
    $count = count($arr);
    for($i=1; $i         $tmp = $arr[$i];
        $j = $i - 1;
        while($arr[$j] > $tmp){
            $arr[$j+1] = $arr[$j];
            $arr[$j] = $tmp;
            $j--;
        }
    }
    return $arr;
}
//选择排序(一维数组)
function select_sort($arr){
    $count = count($arr);
    for($i=0; $i         $k = $i;
        for($j=$i+1; $j             if ($arr[$k] > $arr[$j])
            $k = $j;
            if ($k != $i){
                $tmp = $arr[$i];
                $arr[$i] = $arr[$k];
                $arr[$k] = $tmp;
            }
        }
    }
    return $arr;
}
 
//冒泡排序(一维数组)
function bubble_sort($array){
    $count = count($array);
    if ($count     for($i=0; $i         for($j=$count-1; $j>$i; $j--){
            if ($array[$j]                 $tmp = $array[$j];
                $array[$j] = $array[$j-1];
                $array[$j-1] = $tmp;
            }
        }
    }
    return $array;
}
 
//快速排序(一维数组)
function quick_sort($array){
    if (count($array)     $key = $array[0];
    $left_arr = array();
    $right_arr = array();
    for ($i=1; $i         if ($array[$i]         else
        $right_arr[] = $array[$i];
    }
    $left_arr = quick_sort($left_arr);
    $right_arr = quick_sort($right_arr);
    return array_merge($left_arr, array($key), $right_arr);
}

 


 

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Issues
php data acquisition?
From 1970-01-01 08:00:00
0
0
0
PHP extension intl
From 1970-01-01 08:00:00
0
0
0
How to learn php well
From 1970-01-01 08:00:00
0
0
0
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template