actionscript 3 - Group a multidimensional array by a particular value -

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i have multidimensional array , trying group them according value of array properties.

i'm trying group them id, won't know id beforehand. so, it's not can put in loop , while < 7, because won't know 7 maximum value id value,

array (  [0] => array (       [name] => r8900       [type] => public       [id] => 1       ) [1] => array (       [name] => r8944       [type] => public       [id] => 1       ) [2] => array (       [name] => r8922       [type] => private       [id] => 3       ) [3] => array (       [name] => r8816       [type] => private       [id] => 3       )  [4] => array (       [name] => r7434       [type] => vip       [id] => 7       ) )

what i'm hoping produce:

array (  [1] => array (       [0] => array (                 [name] => r8900                 [type] => public                 )       [1] => array (                 [name] => r8944                 [type] => public                 )       )   [3] => array (       [2] => array (              [name] => r8922              [type] => private              )        [3] => array (              [name] => r8816              [type] => private              )       )   [7] => array (       [4] => array (              [name] => r7434              [type] => vip              )       ) )

something simple as:

var result:object = {};  each(var i:object in input) {     if(!result.hasownproperty(i.id))     {         result[i.id] = [];     }      result[i.id].push(i);     delete i.id; }

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