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PHP 查找数值数组中不重复最大和最小的10个数

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Release: 2016-06-06 19:32:14
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主要是使用内置函数,试过多种方法,快速排序,归并,没有内置函数处理快!sort()用的就是快排! 无 //随机生成1万个元素的数组for($i=0;$i10000;$i++){ $ary[]=rand(1,100000);}$ary=array_unique($ary); //去重复数值sort($ary);//顺序排序$min_10=array_sl

主要是使用内置函数,试过多种方法,快速排序,归并,没有内置函数处理快!sort()用的就是快排!
//随机生成1万个元素的数组
for($i=0;$i<10000;$i++){
 $ary[]=rand(1,100000);
}
$ary=array_unique($ary); //去重复数值
sort($ary);//顺序排序
$min_10=array_slice($ary,0, 10);//取出最小的10个数值
$max_10=array_slice($ary,-10, 10);//取出最大的10个数值
rsort($max_10);//倒序排序最大的10个数值
echo '<pre class="brush:php;toolbar:false">';
print_r($min_10);
print_r($max_10);
unset($ary,$min_10,$max_10);
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//运行结果
Array
(
    [0] => 16
    [1] => 19
    [2] => 22
    [3] => 31
    [4] => 40
    [5] => 49
    [6] => 71
    [7] => 74
    [8] => 80
    [9] => 92
)
Array
(
    [0] => 99997
    [1] => 99991
    [2] => 99973
    [3] => 99958
    [4] => 99955
    [5] => 99946
    [6] => 99939
    [7] => 99933
    [8] => 99927
    [9] => 99900
)
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