一个剽悍的算24点游戏的PHP程序
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
程序运行结果为:
Array( [0] => (5-1/5)*5 [1] => 5*(5-1/5))

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