组合第二弹问题求助..

[黄袍披身]

11 22 33
44 55 66
77 88 99

要得到

11 44 77
11 44 88
11 44 99
11 55 77
11 55 88
11 55 99
...
22 44 77
22 44 88
...
33 44 77
..

如此类推的函数...感冒了,脑子动不了了...感谢.

[黄袍披身]

忘记了 我在写js程序 哈哈.一样php函数写出来我给修改一下。一样给分

[乌镇程序员]

$a = array(11,22,33);
$b = array(44,55,66);
$c = array(77,88,99);
$str = '';
echo "<pre>";
foreach($a as $v1) {
   foreach($b as $v2) {
      foreach($c as $v3) $str .= "{$v1} {$v2} {$v3}\n";
   }
}
echo $str;

[xuzuning]

这是一个求 笛卡尔积 的题目，比你第一问描述的清楚的多

$a = array(11, 22, 33);
$b = array(44, 55, 66);
$c = array(77, 88, 99);


function Descartes($a, $b) {
  $r = array();
  if(is_array($a)) foreach($a as $v) $r = array_merge($r, Descartes($v, $b));
  elseif(is_array($b)) foreach($b as $v) $r = array_merge($r, Descartes($a, $v));
  else $r[] = "$a $b";
  return $r;
}
print_r( Descartes( Descartes($a, $b), $c ) );

Array
(
[0] => 11 44 77
[1] => 11 44 88
[2] => 11 44 99
[3] => 11 55 77
[4] => 11 55 88
[5] => 11 55 99
[6] => 11 66 77
[7] => 11 66 88
[8] => 11 66 99
[9] => 22 44 77
[10] => 22 44 88
[11] => 22 44 99
[12] => 22 55 77
[13] => 22 55 88
[14] => 22 55 99
[15] => 22 66 77
[16] => 22 66 88
[17] => 22 66 99
[18] => 33 44 77
[19] => 33 44 88
[20] => 33 44 99
[21] => 33 55 77
[22] => 33 55 88
[23] => 33 55 99
[24] => 33 66 77
[25] => 33 66 88
[26] => 33 66 99
)

[黄袍披身]

[Quote=引用 3 楼 xuzuning 的回复:]

这是一个求 笛卡尔积 的题目，比你第一问描述的清楚的多
PHP code
$a = array(11, 22, 33);
$b = array(44, 55, 66);
$c = array(77, 88, 99);


function Descartes($a, $b) {
$r = array();
if(is_array($a)) foreach($a as $v) $r =……
[/Quote]
小弟不才，受教了

[一起混吧]

        $arr1=array('11','22','33');
	$arr2=array('44','55','66');
	$arr3=array('77','88','99');
 function get($arr1,$arr2,$arr3){
	foreach($arr1 as $val){
	    foreach($arr2 as $val2){
		   foreach($arr3 as $val3){
                       $newarr[]=array($val,$val2,$val3);	
		   } 
	    }
	
	}
	foreach($newarr as $v){
	    $arr[]=join(' ',$v);
	}
	return $arr;
 }
	print_r(get($arr1,$arr2,$arr3));

Array
(
[0] => 11 44 77
[1] => 11 44 88
[2] => 11 44 99
[3] => 11 55 77
[4] => 11 55 88
[5] => 11 55 99
[6] => 11 66 77
[7] => 11 66 88
[8] => 11 66 99
[9] => 22 44 77
[10] => 22 44 88
[11] => 22 44 99
[12] => 22 55 77
[13] => 22 55 88
[14] => 22 55 99
[15] => 22 66 77
[16] => 22 66 88
[17] => 22 66 99
[18] => 33 44 77
[19] => 33 44 88
[20] => 33 44 99
[21] => 33 55 77
[22] => 33 55 88
[23] => 33 55 99
[24] => 33 66 77
[25] => 33 66 88
[26] => 33 66 99
)

[wbandzlhgod]

哈哈哈 学习啦!!!

记住 ---- 笛卡儿积

[ulpyuxa]

其实就是用几个循环就OK了。