一个关于算法的,请大伙儿帮帮忙

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Release: 2016-06-13 11:57:33
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一个关于算法的,请大家帮帮忙
$arr = array(
    array( "A",  "B",  "C"),
    array("1",  "2",  "3", "4"),
    array("X",  "Y",  "Z"),
    ....................................
);
这样的一个数字,如何打印成下面的样子   (数组的大小不定)

A    1      X
A    1      Y
A    1      Z
A    2      X
A    2      Y
A    2      Z
A    3      X
A    3      Y
A    3      Z
A    4      X
A    4      Y
A    4      Z

B    1      X
B    1      Y
B    1      Z
B    2      X
B    2      Y
B    2      Z
B    3      X
B    3      Y
B    3      Z
B    4      X
B    4      Y
B    4      Z

C    1      X
C    1      Y
C    1      Z
C    2      X
C    2      Y
C    2      Z
C    3      X
C    3      Y
C    3      Z
C    4      X
C    4      Y
C    4      Z
------解决方案--------------------
这个符合你的输出要求

$arr = array(<br />  array( "A",  "B",  "C"),<br />  array("1",  "2",  "3", "4"),<br />  array("X",  "Y",  "Z"),<br />);<br /> <br />function foo($d) {<br />  $r = array_pop($d);<br />  while($d) {<br />    $t = array();<br />    foreach(array_pop($d) as $k1=>$x) {<br />      foreach($r as $k2=>$y) $t[] = "$x $y";<br />    }<br />    $r = $t;<br />  }<br />  return $r;<br />}<br />print_r(foo($arr));<br />
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Array<br>(<br>    [0] => A 1 X<br>    [1] => A 1 Y<br>    [2] => A 1 Z<br>    [3] => A 2 X<br>    [4] => A 2 Y<br>    [5] => A 2 Z<br>    [6] => A 3 X<br>    [7] => A 3 Y<br>    [8] => A 3 Z<br>    [9] => A 4 X<br>    [10] => A 4 Y<br>    [11] => A 4 Z<br>    [12] => B 1 X<br>    [13] => B 1 Y<br>    [14] => B 1 Z<br>    [15] => B 2 X<br>    [16] => B 2 Y<br>    [17] => B 2 Z<br>    [18] => B 3 X<br>    [19] => B 3 Y<br>    [20] => B 3 Z<br>    [21] => B 4 X<br>    [22] => B 4 Y<br>    [23] => B 4 Z<br>    [24] => C 1 X<br>    [25] => C 1 Y<br>    [26] => C 1 Z<br>    [27] => C 2 X<br>    [28] => C 2 Y<br>    [29] => C 2 Z<br>    [30] => C 3 X<br>    [31] => C 3 Y<br>    [32] => C 3 Z<br>    [33] => C 4 X<div class="clear">
                 
              
              
        
            </div>
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