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逆序数组插入元素PHP实现

WBOY
Release: 2016-06-13 10:50:00
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PHP代码如下:


 1  2 /**
 3  * 逆序二维数组插入一元素
 4  *
 5  * @author WadeYu
 6  * @date 2012-05-30
 7  */
 8 $aSorted = array(
 9     array(1, 100),
10     array(2, 90),
11     array(3, 80),
12     array(4, 70),
13     array(5, 60),
14     array(6, 50),
15     array(7, 40),
16     array(8, 40),
17     array(9, 40),
18     array(10, 20),
19 );
20 $aInsert = array(11, 40);
21 $maxCmpIdx = 0;
22 $cnt = 0;
23 $maxCnt = 10;
24 foreach ($aSorted as $idx => $arr){
25     if ($arr[0] == $aInsert[0]){
26         $maxCmpIdx = $idx;
27     }
28     $cnt++;
29 }
30 if ( !$maxCmpIdx){
31     $maxCmpIdx = $cnt++;
32 }
33 $aSorted[$maxCmpIdx] = $aInsert;
34 for ($i = $maxCmpIdx; $i > 0; $i--){
35     if ($aSorted[$i][1] > $aSorted[$i-1][1]){
36         $aTmp = $aSorted[$i-1];
37         $aSorted[$i-1] = $aSorted[$i];
38         $aSorted[$i] = $aTmp;
39         continue ;
40     }
41     break;
42 }
43 for ($i = $cnt; $i > $maxCnt; $i--){
44     unset($aSorted[$i-1]);
45 }
46 print_r($aSorted);

 

 

摘自 huan & ping

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