排序有什么更好的步骤
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2022-04-22 22:34:57
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排序有什么更好的方法
array(
[0] =>array(
'name' => "a",
'time' => '879798'),
[1] = >array(
'name' => "a9",
'time' => '85665565'),
[2] = >array(
'name' => "hdhdjd",
'time' => '8154465'),
[3] = >array(
'name' => "a",
'time' => '800000'),
[4] = >array(
'name' => "dr",
'time' => '789898'),
);
是一个已经按照time排序好的数组
现在要排这样
array(
[0] =>array(
'name' => "a",
'time' => '879798'),
[1] = >array(
'name' => "a",
'time' => '800000'),
[2] = >array(
'name' => "a9",
'time' => '85665565'),
[3] = >array(
'name' => "hdhdjd",
'time' => '8154465'),
[4] = >array(
'name' => "dr",
'time' => '789898'),
);
把name相同的在一起。以第一个出现的次序为大。
不知道有什么好方式啊,代码写的漂亮点的。
------解决方案--------------------
array(
[0] =>array(
'name' => "a",
'time' => '879798'),
[1] = >array(
'name' => "a9",
'time' => '85665565'),
[2] = >array(
'name' => "hdhdjd",
'time' => '8154465'),
[3] = >array(
'name' => "a",
'time' => '800000'),
[4] = >array(
'name' => "dr",
'time' => '789898'),
);
是一个已经按照time排序好的数组
现在要排这样
array(
[0] =>array(
'name' => "a",
'time' => '879798'),
[1] = >array(
'name' => "a",
'time' => '800000'),
[2] = >array(
'name' => "a9",
'time' => '85665565'),
[3] = >array(
'name' => "hdhdjd",
'time' => '8154465'),
[4] = >array(
'name' => "dr",
'time' => '789898'),
);
把name相同的在一起。以第一个出现的次序为大。
不知道有什么好方式啊,代码写的漂亮点的。
------解决方案--------------------
- PHP code
$ar = array( 0 =>array( 'name' => "a", 'time' => '879798'), 1 => array( 'name' => "a9", 'time' => '856565'), //85665565 ? 示例数据有问题吧,看不出是按time排序的! 2 =>array( 'name' => "hdhdjd", 'time' => '815465'), 3 =>array( 'name' => "a", 'time' => '800000'), 4 =>array( 'name' => "dr", 'time' => '789898'), ); $result = array(); $len = count($ar); for ($i = 0; $i '; print_r($result); /* Array ( [0] => Array ( [name] => a [time] => 879798 ) [1] => Array ( [0] => Array ( [name] => a [time] => 800000 ) ) [2] => Array ( [name] => a9 [time] => 856565 ) [3] => Array ( [name] => hdhdjd [time] => 815465 ) [4] => Array ( [name] => dr [time] => 789898 ) [5] => ) */
------解决方案--------------------
有点问题,修改一下:
- PHP code
$result = array(); $len = count($ar); for ($i = 0; $i ------解决方案--------------------
- C/C++ code
"a", 'time' => '879798'), array( 'name' => "a9", 'time' => '85665565'), array( 'name' => "dr", 'time' => '8154465'), array( 'name' => "a", 'time' => '800000'), array( 'name' => "dr", 'time' => '789898'), ); $names = array(); $index = array(); array_walk($arr, function($val, $key){ global $names; global $index; $names[] = $val['name']; $index[] = $key; }); array_multisort($names, $index, $arr); print_r($arr); ?>相关文章
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