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                      1. 当前位置:首页 > PHP教程 > php数组 > 列表

                        PHP使用递归生成子数组(代码实例)

                        发布:smiling 来源: PHP粉丝网  添加日期:2019-02-05 13:49:18 浏览: 评论:0 

                        注册送现金一元秒提现JIDINGYIGESHUZU,SHIYONGDIGUISHENGCHENGJIDINGSHUZUDESUOYOUKENENGDEZISHUZU。BENPIANWENZHANGJIUJIANGJIDAJIAJIESHAORUHEYONGPHPLAISHIXIANCIGONGNENG。

                        LIZI:

                        SHURU:[1,2,3]

                        注册送现金一元秒提现SHUCHU:[1],[1,2],[2],[1,2,3],[2,3],[3]

                        SHURU:[1,2]

                        注册送现金一元秒提现SHUCHU:[1],[1,2],[2]

                        FANGFA:

                        WOMENSHIYONGLIANGGEZHIZHENstartHEendLAIWEIHUSHUZUDEQIDIANHEZHONGDIAN,BINGANZHAOXIAMIANJICHUDEBUZHOUCAOZUO:

                        1.RUGUOWOMENYIJINGDAODASHUZUDEMOWEI,JIUTINGZHI

                        注册送现金一元秒提现2.RUGUOstartDAYUend,ZEZENGJIAJIESHUSUOYIN

                        3.CONGSUOYINstartDAOendDAYINZISHUZUBINGZENGJIAQISHISUOYIN

                        注册送现金一元秒提现YIXIASHISHANGSHUFANGFADEPHPDAIMASHIXIANSHILI:

                        1. <?php  
                        2.  
                        3. // 使用递归函数为给定数组打印所有可能的子数组 
                        4.  
                        5. function printSubArrays($arr$start$end)  
                        6.  
                        7. {   
                        8.  
                        9.     // 如果我们已经到达数组的末尾,就停止 
                        10.  
                        11.     if ($end == count($arr))  
                        12.  
                        13.         return;  
                        14.  
                        15.         
                        16.  
                        17.     // 增加端点并从0开始 
                        18.  
                        19.     else if ($start > $end)  
                        20.  
                        21.         return printSubArrays($arr, 0,   
                        22.  
                        23.                               $end + 1);  
                        24.  
                        25.             
                        26.  
                        27.     // 打印子数组并增加起始点 
                        28.  
                        29.     else 
                        30.  
                        31.     {  
                        32.  
                        33.     echo "[";  
                        34.  
                        35.     for($i = $start$i < $end + 1; $i++)  
                        36.  
                        37.     {  
                        38.  
                        39.         echo $arr[$i];  
                        40.  
                        41.         if($i != $end)  
                        42.  
                        43.         echo ", ";  
                        44.  
                        45.     }  
                        46.  
                        47.     echo "]\n";  
                        48.  
                        49.         return printSubArrays($arr$start + 1,   
                        50.  
                        51.                                     $end);  
                        52.  
                        53.     }  
                        54.  
                        55. }   
                        56.  
                        57.     
                        58.  
                        59. $arr = array(1, 2, 3);  
                        60.  
                        61. printSubArrays($arr, 0, 0); 

                        SHUCHU:

                        1. [1] 
                        2.  
                        3. [1,2] 
                        4.  
                        5. [2] 
                        6.  
                        7. [1,2,3] 
                        8.  
                        9. [2,3] 
                        10.  
                        11. [3] 

                        Tags: PHP递归生成子数组

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