求一个组词算法的思路
有一个组词的需求,请大家帮忙看下,要求如下:
给定一组词,每行一个,如:
裤子
牛仔
纯棉
低腰
加肥
用上面的词组成下面的格式
裤子
牛仔
纯棉
低腰
加肥
裤子牛仔
裤子纯棉
裤子低腰
裤子加肥
裤子牛仔纯棉
裤子牛仔低腰
裤子牛仔加肥
裤子牛仔纯棉低腰
裤子牛仔纯棉加肥
裤子牛仔纯棉低腰加肥
牛仔纯棉
牛仔低腰
牛仔加肥
牛仔纯棉低腰
........
这样依次类推一层一层的组词。
求一个这个需求的算法思路。
------解决方案--------------------
很简单的一个组合问题, 每个词语可选/可不选, 递归跑一下就行了.
------解决方案--------------------
排列组合,是你要的结果么?
- PHP code
$arr=array('裤子','牛仔','纯棉','低腰','加肥'); for($i=1,$count=count($arr);$i Array ( [0] => 裤子 [1] => 牛仔 [2] => 纯棉 [3] => 低腰 [4] => 加肥 ) [2] => Array ( [0] => 裤子牛仔 [1] => 裤子纯棉 [2] => 裤子低腰 [3] => 裤子加肥 [4] => 牛仔纯棉 [5] => 牛仔低腰 [6] => 牛仔加肥 [7] => 纯棉低腰 [8] => 纯棉加肥 [9] => 低腰加肥 ) [3] => Array ( [0] => 裤子牛仔纯棉 [1] => 裤子牛仔低腰 [2] => 裤子牛仔加肥 [3] => 裤子纯棉低腰 [4] => 裤子纯棉加肥 [5] => 裤子低腰加肥 [6] => 牛仔纯棉低腰 [7] => 牛仔纯棉加肥 [8] => 牛仔低腰加肥 [9] => 纯棉低腰加肥 ) [4] => Array ( [0] => 裤子牛仔纯棉低腰 [1] => 裤子牛仔纯棉加肥 [2] => 裤子牛仔低腰加肥 [3] => 裤子纯棉低腰加肥 [4] => 牛仔纯棉低腰加肥 ) [5] => Array ( [0] => 裤子牛仔纯棉低腰加肥 ) )*/ <br><font color="#e78608">------解决方案--------------------</font><br>组合问题,可参考<br>
- PHP code
/**C(M,N) recursive*/ function C($m,$n) { if( $n

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