Re: Generate every possible combination

From: Date: Thu, 16 May 2002 04:47:31 +0000
Subject: Re: Generate every possible combination
References: 1  Groups: php.general 
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Evan Nemerson wrote:
I need to generate every possible combination of the the values in an array. For example, if... $array = Array("A", "B", "C"); I want to be able to do something like print_r(magic_function($array)); which would output Array ( [0] => "ABC" [1] => "ACB" [2] => "BAC" [3] => "BCA" [4] => "CAB" [5] => "CBA" ) I really have no idea where to begin. The best lead I can think of is that there are going to be n! elements in the output array, where n is the size of the input array. Any help would be greatly appreciated. Evan
for ($x=ord("A");$x<=ord("Z");$x++) { for($y=ord("A");$y<=ord("Z");$y++) { for($z=ord("A");$z<=ord("Z");$z++)
    { $array[]=chr($x).chr($y).char($z);
    }
} } is a quick suggestion. Haven't tested it.

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