php排序1亿个QQ号码
吃饱喝足了,还发贴了。
拆开分成几千份进行排序再合并。
首先先创建一个1亿个QQ号的txt。
- PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php // 创建一亿个QQ号的txt (大约需85~100秒)set_time_limit(0);$fn = 'qq.txt';$fp = fopen($fn, 'w');$st = microtime(true);$l = range(0,10000);shuffle($l);foreach ($l as $k=>$v){ $arr = range($v*10000+10000,10000*($v+1)+9999); shuffle($arr); fputs($fp,implode("\n", $arr)."\n"); unset($arr);}echo microtime(true)-$st;?>
稍等一两分钟1亿个随机QQ创建完成了。
QQ号码范围为>10000。文件大小大概有840MB。
下面就进行分类划分成几千份文件。
以QQ号码长度为文件夹,QQ号码前3位为文件名。
- PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php // 长度号码分类 (大约需360~400秒)set_time_limit(0);$st = microtime(true);if(!is_dir('qq_no')) mkdir('qq_no');$file = fopen('qq.txt', 'r'); $i=0;$end_s = '';while(!feof($file)){ $g = 1042*1024; fseek($file,$g*$i); $s = fread($file, $g); $end = strrpos($s, "\n"); $arr_s = $end_s.substr($s, 0, $end); $end_s = substr($s, $end); $arr = explode("\n", $arr_s); foreach ($arr as $k=>$v) { if($v!='') { $tag = "$v[0]$v[1]$v[2]"; $text_arr[strlen($v)][$tag][] = $v; } } foreach ($text_arr as $k=>$v) { $n_dir = 'qq_no/'.$k; if (!is_dir($n_dir)) mkdir($n_dir); foreach ($v as $tag=>$val) { $n_tf = fopen($n_dir.'/'.$tag.'.txt', 'a+'); fputs($n_tf,implode("\n",$val)."\n"); } } unset($text_arr); ++$i;}echo microtime(true)-$st;?>
最后就要每个文件进行排序合并数据了。
- PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php // 排序完成拉 (800~920秒)set_time_limit(0);$st = microtime(true);$qq_done = fopen('qq_done.txt', 'a+');$root = 'qq_no';$dir_array = scandir($root);foreach ($dir_array as $key=>$val){ if ($val != '.' && $val != '..') $dirs[$val] = scandir($root.'/'.$val);}foreach ($dirs as $key=>$val){ foreach ($val as $v) { if ($v != '.' && $v != '..') { $file = $root. '/' . $key . '/'. $v; $c = file_get_contents($file); $arr = explode("\n", $c); sort($arr); fputs($qq_done, implode("\n",$arr)); unlink($file); } } rmdir($root. '/' . $key);}rmdir($root);echo microtime(true)-$st;?>
总共大概花费了20多分钟。
虽然完成了,但方法很土鳖 0_0 ,坛里各位高手们改进改进啊。
------解决方案--------------------
来个C版本的
- C/C++ code
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