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一个剽悍的算24点游戏的PHP程序

Jun 13, 2016 am 11:53 AM
array quot set start

一个强悍的算24点游戏的PHP程序

算24点游戏大家都玩过吧,那么怎么用程序来计算4个数的随意运算组合得到的结果是24呢?比如,5,5,5,1这四个数,如何凑才能得到结果为24?下面介绍一个很强悍的程序,可以将符合条件的所有组合列出来。

<?phpset_time_limit (0); $values = array(5, 5, 5, 1); $result = 24;$list = array();echo "<pre class="brush:php;toolbar:false">"; makeValue($values); print_r($list);function makeValue($values, $set=array()) { 	$words = array("+", "-", "*", "/"); 	if(sizeof($values)==1) 	{ 		$set[] = array_shift($values); 		return makeSpecial($set); 	} 		foreach($values as $key=>$value) 	{ 		$tmpValues = $values; 		unset($tmpValues[$key]); 		foreach($words as $word) 		{ 			makeValue($tmpValues, array_merge($set, array($value, $word))); 		} 	} } function makeSpecial($set) { 	$size = sizeof($set);	if($size
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程序运行结果为:

Array(    [0] => (5-1/5)*5    [1] => 5*(5-1/5))
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