{"id":2147,"date":"2026-04-23T19:24:31","date_gmt":"2026-04-23T11:24:31","guid":{"rendered":"http:\/\/www.preluna.xyz\/?p=2147"},"modified":"2026-04-23T19:24:32","modified_gmt":"2026-04-23T11:24:32","slug":"%e4%ba%a4%e6%9b%bf%e9%87%8d%e5%a4%8d%e5%af%b9%e6%98%af%e5%8f%af%e4%bb%a5%e9%87%8d%e5%8f%a0%e7%bb%9f%e8%ae%a1","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2026\/04\/23\/%e4%ba%a4%e6%9b%bf%e9%87%8d%e5%a4%8d%e5%af%b9%e6%98%af%e5%8f%af%e4%bb%a5%e9%87%8d%e5%8f%a0%e7%bb%9f%e8%ae%a1\/preluna\/text\/","title":{"rendered":"\u4ea4\u66ff\u91cd\u590d\u5bf9\u662f\u53ef\u4ee5\u201c\u91cd\u53e0\u201d\u7edf\u8ba1"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/\u4ea4\u66ff\u91cd\u590d\u5bf9\u662f\u53ef\u4ee5\u91cd\u53e0\u7edf\u8ba1-824x1024.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"824\" height=\"1024\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/\u4ea4\u66ff\u91cd\u590d\u5bf9\u662f\u53ef\u4ee5\u91cd\u53e0\u7edf\u8ba1-824x1024.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2148\"  sizes=\"auto, (max-width: 824px) 100vw, 824px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9053\u9898\u5230\u5e95\u5728\u505a\u4ec0\u4e48<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u8868\u9762\u4e0a\u770b\u50cf\u201c\u5b57\u7b26\u4e32\u9898\u201d\uff0c\u4f46\u672c\u8d28\u4e0a\u662f\u4e24\u6b65\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u628a\u4e00\u4e2a\u5b57\u7b26\u77e9\u9635\u6309\u201c\u5217\u4f18\u5148\u3001\u4ece\u4e0a\u5230\u4e0b\u3001\u4ece\u5de6\u5230\u53f3\u201d\u8bfb\u51fa\u6765\uff0c\u62fc\u6210\u4e00\u4e2a\u957f\u5b57\u7b26\u4e32\u3002<br>\u7b2c\u4e8c\u6b65\uff0c\u628a\u8fd9\u4e2a\u957f\u5b57\u7b26\u4e32\u91cc\u201c\u5939\u5728\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u4e4b\u95f4\u7684\u8fde\u7eed\u7b26\u53f7\u201d\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u4f60\u505a\u9898\u65f6\uff0c\u4e0d\u8981\u4e00\u4e0a\u6765\u5c31\u76ef\u7740\u6b63\u5219\u3002\u5e94\u8be5\u5148\u628a\u9898\u76ee\u62c6\u6210\u4e24\u4e2a\u52a8\u4f5c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5148\u8bfb\u51fa\u9690\u85cf\u5b57\u7b26\u4e32<\/li>\n\n\n\n<li>\u518d\u6309\u89c4\u5219\u6574\u7406\u5b57\u7b26\u4e32<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u662f\u8fd9\u9898\u6700\u5173\u952e\u7684\u601d\u8003\u65b9\u5f0f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5148\u628a\u9898\u76ee\u7ffb\u8bd1\u6210\u4eba\u8bdd<\/h2>\n\n\n\n<p>\u9898\u76ee\u7ed9\u4f60\u4e00\u4e2a\u7531\u5f88\u591a\u884c\u5b57\u7b26\u4e32\u7ec4\u6210\u7684\u201c\u5b57\u7b26\u77e9\u9635\u201d\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u6837\u4f8b\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>7 3\nTsi\nh%x\ni #\nsM \n$a \n#t%\nir!\n<\/code><\/pre>\n\n\n\n<p>\u5b83\u4e0d\u662f\u8ba9\u4f60\u6309\u5e73\u5e38\u90a3\u6837\u4e00\u884c\u4e00\u884c\u8bfb\uff0c\u800c\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5148\u8bfb\u7b2c 0 \u5217\uff0c\u4ece\u4e0a\u5230\u4e0b<\/li>\n\n\n\n<li>\u518d\u8bfb\u7b2c 1 \u5217\uff0c\u4ece\u4e0a\u5230\u4e0b<\/li>\n\n\n\n<li>\u518d\u8bfb\u7b2c 2 \u5217\uff0c\u4ece\u4e0a\u5230\u4e0b<\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u6309\u201c\u5217\u201d\u8bfb\uff0c\u4e0d\u662f\u6309\u201c\u884c\u201d\u8bfb\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\u600e\u4e48\u601d\u8003\uff1a\u5982\u4f55\u628a\u77e9\u9635\u6309\u5217\u8bfb\u51fa\u6765<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5e73\u5e38\u8bfb\u6cd5<\/h3>\n\n\n\n<p>\u5e73\u5e38\u6211\u4eec\u66f4\u719f\u6089\u7684\u662f\u6309\u884c\u8bfb\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for row in range(n):\n    for col in range(m):\n        ...\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u8868\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5148\u56fa\u5b9a\u7b2c 0 \u884c\uff0c\u628a\u8fd9\u4e00\u884c\u8bfb\u5b8c<\/li>\n\n\n\n<li>\u518d\u8bfb\u7b2c 1 \u884c<\/li>\n\n\n\n<li>\u518d\u8bfb\u7b2c 2 \u884c<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u53eb\u201c\u6309\u884c\u8bfb\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u9700\u8981\u7684\u8bfb\u6cd5<\/h3>\n\n\n\n<p>\u4f46\u8fd9\u9898\u8981\u6c42\u6309\u5217\u8bfb\uff0c\u6240\u4ee5\u987a\u5e8f\u8981\u53cd\u8fc7\u6765\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for col in range(m):\n    for row in range(n):\n        ...\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u8868\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5148\u56fa\u5b9a\u7b2c 0 \u5217\uff0c\u628a\u8fd9\u4e00\u5217\u4ece\u4e0a\u5230\u4e0b\u8bfb\u5b8c<\/li>\n\n\n\n<li>\u518d\u8bfb\u7b2c 1 \u5217<\/li>\n\n\n\n<li>\u518d\u8bfb\u7b2c 2 \u5217<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u5c31\u662f\u8fd9\u9898\u7684\u6838\u5fc3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7528\u6837\u4f8b\u624b\u52a8\u8d70\u4e00\u904d<\/h2>\n\n\n\n<p>\u539f\u77e9\u9635\u53ef\u4ee5\u770b\u6210\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u884c\u53f7<\/th><th>\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td>0<\/td><td><code>Tsi<\/code><\/td><\/tr><tr><td>1<\/td><td><code>h%x<\/code><\/td><\/tr><tr><td>2<\/td><td><code>i #<\/code><\/td><\/tr><tr><td>3<\/td><td><code>sM<\/code><\/td><\/tr><tr><td>4<\/td><td><code>$a<\/code><\/td><\/tr><tr><td>5<\/td><td><code>#t%<\/code><\/td><\/tr><tr><td>6<\/td><td><code>ir!<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u73b0\u5728\u6309\u5217\u8bfb\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c 0 \u5217<\/h3>\n\n\n\n<p>\u53d6\u6bcf\u4e00\u884c\u7684\u7b2c 0 \u4e2a\u5b57\u7b26\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>T<\/code><\/li>\n\n\n\n<li><code>h<\/code><\/li>\n\n\n\n<li><code>i<\/code><\/li>\n\n\n\n<li><code>s<\/code><\/li>\n\n\n\n<li><code>$<\/code><\/li>\n\n\n\n<li><code>#<\/code><\/li>\n\n\n\n<li><code>i<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u62fc\u8d77\u6765\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This$#i\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c 1 \u5217<\/h3>\n\n\n\n<p>\u53d6\u6bcf\u4e00\u884c\u7684\u7b2c 1 \u4e2a\u5b57\u7b26\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>s<\/code><\/li>\n\n\n\n<li><code>%<\/code><\/li>\n\n\n\n<li><\/li>\n\n\n\n<li><code>M<\/code><\/li>\n\n\n\n<li><code>a<\/code><\/li>\n\n\n\n<li><code>t<\/code><\/li>\n\n\n\n<li><code>r<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u62fc\u8d77\u6765\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>s% Matr\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c 2 \u5217<\/h3>\n\n\n\n<p>\u53d6\u6bcf\u4e00\u884c\u7684\u7b2c 2 \u4e2a\u5b57\u7b26\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>i<\/code><\/li>\n\n\n\n<li><code>x<\/code><\/li>\n\n\n\n<li><code>#<\/code><\/li>\n\n\n\n<li><\/li>\n\n\n\n<li><\/li>\n\n\n\n<li><code>%<\/code><\/li>\n\n\n\n<li><code>!<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u62fc\u8d77\u6765\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ix#  %!\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u5217\u8fde\u8d77\u6765<\/h3>\n\n\n\n<p>\u6700\u7ec8\u5f97\u5230\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This$#is% Matrix#  %!\n<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f\uff0c\u8fd9\u8fd8\u4e0d\u662f\u6700\u540e\u7b54\u6848\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\u600e\u4e48\u601d\u8003\uff1a\u54ea\u4e9b\u4e1c\u897f\u8981\u66ff\u6362\u6210\u7a7a\u683c<\/h2>\n\n\n\n<p>\u9898\u76ee\u8bf4\uff1a<\/p>\n\n\n\n<p>\u5982\u679c\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u5b57\u7b26\u4e4b\u95f4\u5939\u7740\u4e00\u4e9b\u7b26\u53f7\u6216\u7a7a\u683c\uff0c\u90a3\u4e48\u8fd9\u4e9b\u7b26\u53f7\u548c\u7a7a\u683c\u8981\u88ab\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This$#is\n<\/code><\/pre>\n\n\n\n<p>\u4e2d\u95f4 <code>$#<\/code> \u4e24\u8fb9\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de6\u8fb9 <code>s<\/code>\uff0c\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n\n\n\n<li>\u53f3\u8fb9 <code>i<\/code>\uff0c\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5 <code>$#<\/code> \u8981\u88ab\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\uff0c\u53d8\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This is\n<\/code><\/pre>\n\n\n\n<p>\u518d\u770b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Matrix#  %!\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc <code># %<\/code> \u5728 <code>x<\/code> \u548c <code>%<\/code>\u3001<code>!<\/code> \u9644\u8fd1\u8981\u4ed4\u7ec6\u770b\u3002\u6700\u540e\u771f\u6b63\u9700\u8981\u66ff\u6362\u7684\u662f\u90a3\u4e9b\u201c\u5939\u5728\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u4e4b\u95f4\u201d\u7684\u8fde\u7eed\u975e\u5b57\u6bcd\u6570\u5b57\u5b57\u7b26\u3002<\/p>\n\n\n\n<p>\u5904\u7406\u540e\u7ed3\u679c\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This is Matrix# %!\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u6700\u540e\u7684 <code># %!<\/code> \u6ca1\u88ab\u5168\u90e8\u5220\u6389\uff0c\u662f\u56e0\u4e3a\u5b83\u4eec\u540e\u9762\u4e0d\u518d\u6ee1\u8db3\u201c\u4e24\u8fb9\u90fd\u662f\u5b57\u6bcd\u6570\u5b57\u5b57\u7b26\u201d\u7684\u6761\u4ef6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9898\u4e3a\u4ec0\u4e48\u9002\u5408\u7528\u6b63\u5219<\/h2>\n\n\n\n<p>\u56e0\u4e3a\u7b2c\u4e8c\u6b65\u7684\u89c4\u5219\u672c\u8d28\u4e0a\u662f\u5728\u627e\u4e00\u79cd\u201c\u6a21\u5f0f\u201d\uff1a<\/p>\n\n\n\n<p>\u201c\u5de6\u8fb9\u662f\u5b57\u6bcd\u6570\u5b57\u201d<br>\u201c\u4e2d\u95f4\u662f\u4e00\u4e32\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57\u7684\u5b57\u7b26\u201d<br>\u201c\u53f3\u8fb9\u8fd8\u662f\u5b57\u6bcd\u6570\u5b57\u201d<\/p>\n\n\n\n<p>\u8fd9\u6b63\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u64c5\u957f\u505a\u7684\u4e8b\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u4f60\u5148\u628a\u6574\u4e32\u8bfb\u51fa\u6765\uff0c\u518d\u4e00\u6b21\u6027\u66ff\u6362\u6389\u6ee1\u8db3\u8fd9\u79cd\u6a21\u5f0f\u7684\u90e8\u5206\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u57fa\u672c\u8bed\u6cd5\u548c\u505a\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u8f93\u5165\u77e9\u9635<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>n, m = map(int, input().split())\nmatrix = &#91;input() for _ in range(n)]\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u884c\u8f93\u5165\u4e24\u4e2a\u6574\u6570 <code>n<\/code> \u548c <code>m<\/code><\/li>\n\n\n\n<li>\u540e\u9762\u8bfb\u5165 <code>n<\/code> \u884c\u5b57\u7b26\u4e32<\/li>\n\n\n\n<li>\u6bcf\u4e00\u884c\u5b57\u7b26\u4e32\u957f\u5ea6\u90fd\u662f <code>m<\/code><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u6309\u5217\u8bfb\u53d6<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>decoded = \"\"\nfor col in range(m):\n    for row in range(n):\n        decoded += matrix&#91;row]&#91;col]\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc\u7684 <code>matrix[row][col]<\/code> \u8868\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c <code>row<\/code> \u884c<\/li>\n\n\n\n<li>\u7b2c <code>col<\/code> \u5217<\/li>\n\n\n\n<li>\u8fd9\u4e2a\u4f4d\u7f6e\u4e0a\u7684\u5b57\u7b26<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff1a\u7528\u6b63\u5219\u66ff\u6362<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import re\nresult = re.sub(r'(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])', ' ', decoded)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u6b63\u5219\u4e0d\u7528\u4e00\u4e0b\u5b50\u5168\u8bb0\u4f4f\uff0c\u4f46\u4f60\u8981\u77e5\u9053\u5b83\u5728\u627e\u4ec0\u4e48\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u6761\u6b63\u5219\u5230\u5e95\u662f\u4ec0\u4e48\u610f\u601d<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u6211\u4eec\u62c6\u5f00\u770b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <code>(?&lt;=[A-Za-z0-9])<\/code><\/h3>\n\n\n\n<p>\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<p>\u5f53\u524d\u4f4d\u7f6e\u5de6\u8fb9\uff0c\u5fc5\u987b\u7d27\u6328\u7740\u4e00\u4e2a\u5b57\u6bcd\u6216\u6570\u5b57\u3002<\/p>\n\n\n\n<p>\u5b83\u53ea\u662f\u201c\u68c0\u67e5\u5de6\u8fb9\u201d\uff0c\u81ea\u5df1\u4e0d\u5403\u6389\u5b57\u7b26\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. <code>[^A-Za-z0-9]+<\/code><\/h3>\n\n\n\n<p>\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<p>\u5339\u914d\u4e00\u6bb5\u8fde\u7eed\u7684\u201c\u4e0d\u662f\u5b57\u6bcd\u4e5f\u4e0d\u662f\u6570\u5b57\u201d\u7684\u5b57\u7b26\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a7a\u683c<\/li>\n\n\n\n<li><code>#<\/code><\/li>\n\n\n\n<li><code>%<\/code><\/li>\n\n\n\n<li><code>$<\/code><\/li>\n\n\n\n<li><code>!<\/code><\/li>\n\n\n\n<li>\u5176\u4ed6\u7b26\u53f7<\/li>\n<\/ul>\n\n\n\n<p><code>+<\/code> \u8868\u793a\u4e00\u4e2a\u6216\u591a\u4e2a\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. <code>(?=[A-Za-z0-9])<\/code><\/h3>\n\n\n\n<p>\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<p>\u5f53\u524d\u4f4d\u7f6e\u53f3\u8fb9\uff0c\u5fc5\u987b\u7d27\u6328\u7740\u4e00\u4e2a\u5b57\u6bcd\u6216\u6570\u5b57\u3002<\/p>\n\n\n\n<p>\u5b83\u4e5f\u662f\u53ea\u68c0\u67e5\uff0c\u4e0d\u5403\u6389\u5b57\u7b26\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5408\u8d77\u6765\u7684\u610f\u601d<\/h3>\n\n\n\n<p>\u6574\u6761\u89c4\u5219\u7684\u610f\u601d\u5c31\u662f\uff1a<\/p>\n\n\n\n<p>\u627e\u5230\u4e00\u6bb5\u8fde\u7eed\u7684\u975e\u5b57\u6bcd\u6570\u5b57\u5b57\u7b26\uff0c\u5e76\u4e14\u5b83\u5de6\u8fb9\u7d27\u6328\u7740\u5b57\u6bcd\u6570\u5b57\uff0c\u53f3\u8fb9\u4e5f\u7d27\u6328\u7740\u5b57\u6bcd\u6570\u5b57\u3002<\/p>\n\n\n\n<p>\u627e\u5230\u540e\uff0c\u628a\u8fd9\u4e00\u6574\u6bb5\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c <code>' '<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6700\u5c0f\u53ef\u8fd0\u884c\u4ee3\u7801<\/h2>\n\n\n\n<p>\u8fd9\u662f\u6700\u76f4\u63a5\u3001\u6700\u9002\u5408\u521d\u5b66\u8005\u7406\u89e3\u7684\u5199\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import re\n\nn, m = map(int, input().split())\nmatrix = &#91;input() for _ in range(n)]\n\ndecoded = \"\"\nfor col in range(m):\n    for row in range(n):\n        decoded += matrix&#91;row]&#91;col]\n\nresult = re.sub(r'(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])', ' ', decoded)\nprint(result)\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ece\u601d\u8def\u5230\u4ee3\u7801<\/h2>\n\n\n\n<p>\u8fd9\u9898\u771f\u6b63\u5e94\u8be5\u8fd9\u6837\u60f3\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff0c\u5148\u4e0d\u8981\u60f3\u6b63\u5219<\/h3>\n\n\n\n<p>\u5148\u95ee\u81ea\u5df1\uff1a<\/p>\n\n\n\n<p>\u201c\u9898\u76ee\u8ba9\u6211\u6309\u4ec0\u4e48\u987a\u5e8f\u8bfb\u5b57\u7b26\uff1f\u201d<\/p>\n\n\n\n<p>\u7b54\u6848\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u662f\u6309\u884c<\/li>\n\n\n\n<li>\u800c\u662f\u6309\u5217<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u4f60\u8111\u5b50\u91cc\u5148\u51fa\u73b0\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for col in range(m):\n    for row in range(n):\n<\/code><\/pre>\n\n\n\n<p>\u800c\u4e0d\u662f\u5148\u53bb\u60f3 <code>re.sub()<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff0c\u628a\u8bfb\u51fa\u6765\u7684\u5b57\u7b26\u62fc\u6210\u4e00\u4e2a\u5b8c\u6574\u5b57\u7b26\u4e32<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u9898\u76ee\u7684\u66ff\u6362\u89c4\u5219\uff0c\u662f\u5bf9\u201c\u6574\u4e2a\u89e3\u7801\u540e\u7684\u5b57\u7b26\u4e32\u201d\u505a\u5904\u7406\uff0c\u4e0d\u662f\u5bf9\u67d0\u4e00\u884c\u5355\u72ec\u5904\u7406\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u4f60\u9700\u8981\u5148\u5f97\u5230\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>decoded\n<\/code><\/pre>\n\n\n\n<p>\u800c\u4e0d\u662f\u8fb9\u8bfb\u8fb9\u5224\u65ad\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff0c\u518d\u5bf9\u5b8c\u6574\u5b57\u7b26\u4e32\u505a\u201c\u6e05\u6d17\u201d<\/h3>\n\n\n\n<p>\u9898\u76ee\u8bf4\u7684\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u4e4b\u95f4<\/li>\n\n\n\n<li>\u5982\u679c\u5939\u7740\u4e00\u4e32\u7b26\u53f7\u6216\u7a7a\u683c<\/li>\n\n\n\n<li>\u5c31\u628a\u8fd9\u4e00\u4e32\u53d8\u6210\u4e00\u4e2a\u7a7a\u683c<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u8bf4\u660e\u7b2c\u4e8c\u6b65\u662f\u201c\u6a21\u5f0f\u66ff\u6362\u201d\uff0c\u6240\u4ee5\u6700\u81ea\u7136\u5c31\u662f <code>re.sub()<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6267\u884c\u8fc7\u7a0b\u5b8c\u6574\u8d70\u4e00\u904d<\/h2>\n\n\n\n<p>\u7a0b\u5e8f\u6267\u884c\u987a\u5e8f\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u8bfb\u53d6 <code>n<\/code> \u548c <code>m<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>n, m = map(int, input().split())\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u8bfb\u53d6\u77e9\u9635\u6bcf\u4e00\u884c<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>matrix = &#91;input() for _ in range(n)]\n<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6 <code>matrix<\/code> \u662f\u4e00\u4e2a\u5217\u8868\uff0c\u91cc\u9762\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u884c\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;\n    \"Tsi\",\n    \"h%x\",\n    \"i #\",\n    \"sM \",\n    \"$a \",\n    \"#t%\",\n    \"ir!\"\n]\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u53cc\u91cd\u5faa\u73af\u6309\u5217\u53d6\u5b57\u7b26<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>for col in range(m):\n    for row in range(n):\n        decoded += matrix&#91;row]&#91;col]\n<\/code><\/pre>\n\n\n\n<p>\u5148\u53d6\u7b2c 0 \u5217\u5168\u90e8\uff0c\u518d\u53d6\u7b2c 1 \u5217\u5168\u90e8\uff0c\u518d\u53d6\u7b2c 2 \u5217\u5168\u90e8\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u6b63\u5219\u66ff\u6362<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>result = re.sub(..., ' ', decoded)\n<\/code><\/pre>\n\n\n\n<p>\u628a\u6ee1\u8db3\u89c4\u5219\u7684\u90a3\u4e00\u6bb5\u8fde\u7eed\u7b26\u53f7\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u8f93\u51fa\u7ed3\u679c<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>print(result)\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9898\u91cc\u6700\u5bb9\u6613\u9519\u7684\u5730\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u628a\u77e9\u9635\u6309\u884c\u8bfb\u4e86\uff0c\u800c\u4e0d\u662f\u6309\u5217\u8bfb<\/h3>\n\n\n\n<p>\u5f88\u591a\u4eba\u4f1a\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>for row in range(n):\n    for col in range(m):\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5c31\u9519\u4e86\uff0c\u56e0\u4e3a\u9898\u76ee\u8981\u7684\u662f\u201c\u5217\u4f18\u5148\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4ee5\u4e3a\u6240\u6709\u7b26\u53f7\u90fd\u8981\u5220\u6389<\/h3>\n\n\n\n<p>\u4e0d\u662f\u6240\u6709\u7b26\u53f7\u90fd\u5220\u3002<\/p>\n\n\n\n<p>\u53ea\u6709\u201c\u5939\u5728\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u4e4b\u95f4\u201d\u7684\u90a3\u4e00\u6bb5\u8fde\u7eed\u7b26\u53f7\u624d\u66ff\u6362\u6210\u7a7a\u683c\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u672b\u5c3e\u7684\u67d0\u4e9b\u7b26\u53f7\u4e0d\u4e00\u5b9a\u52a8\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u7528 <code>\\w<\/code> \u4ee3\u66ff\u5b57\u6bcd\u6570\u5b57\u65f6\u4e0d\u591f\u4e25\u8c28<\/h3>\n\n\n\n<p>\u6709\u4e9b\u4eba\u4f1a\u5199\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=\\w)\\W+(?=\\w)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5728\u5f88\u591a\u573a\u666f\u4e5f\u80fd\u8fc7\uff0c\u4f46\u8981\u6ce8\u610f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\\w<\/code> \u4e0d\u53ea\u662f\u5b57\u6bcd\u548c\u6570\u5b57<\/li>\n\n\n\n<li>\u5b83\u901a\u5e38\u8fd8\u5305\u62ec\u4e0b\u5212\u7ebf <code>_<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u800c\u9898\u76ee\u660e\u786e\u8bf4 alphanumeric \u53ea\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>A-Z<\/code><\/li>\n\n\n\n<li><code>a-z<\/code><\/li>\n\n\n\n<li><code>0-9<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u66f4\u4e25\u8c28\u7684\u5199\u6cd5\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;A-Za-z0-9]\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u6ca1\u6709\u5148 <code>import re<\/code><\/h3>\n\n\n\n<p>\u6b63\u5219\u76f8\u5173\u51fd\u6570\u5728 <code>re<\/code> \u6a21\u5757\u91cc\uff0c\u4e0d\u5bfc\u5165\u5c31\u4e0d\u80fd\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import re\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd8\u80fd\u4e0d\u80fd\u4e0d\u7528\u6b63\u5219<\/h2>\n\n\n\n<p>\u53ef\u4ee5\uff0c\u4f46\u4f1a\u66f4\u7ed5\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u4f60\u5f97\u81ea\u5df1\u5224\u65ad\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u524d\u5b57\u7b26\u662f\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n\n\n\n<li>\u4e00\u6bb5\u7b26\u53f7\u7684\u5de6\u53f3\u4e24\u8fb9\u662f\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n\n\n\n<li>\u8981\u4e0d\u8981\u52a0\u7a7a\u683c<\/li>\n\n\n\n<li>\u52a0\u51e0\u4e2a\u7a7a\u683c<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4f1a\u5199\u51fa\u5f88\u591a\u5224\u65ad\u903b\u8f91\u3002<\/p>\n\n\n\n<p>\u800c\u9898\u76ee\u8fd8\u7279\u522b\u63d0\u793a\u4e86\u201c\u4e0d\u9700\u8981 if \u6761\u4ef6\u201d\uff0c\u5176\u5b9e\u5c31\u662f\u5728\u6697\u793a\u4f60\uff1a\u7528\u6b63\u5219\u6700\u5408\u9002\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u9898\u7684\u91cd\u70b9\u4e0d\u662f\u201c\u70ab\u6280\u201d\uff0c\u800c\u662f\u5b66\u4f1a\u8bc6\u522b\uff1a<\/p>\n\n\n\n<p>\u201c\u4ec0\u4e48\u65f6\u5019\u9002\u5408\u5148\u62fc\u5b57\u7b26\u4e32\uff0c\u518d\u505a\u6a21\u5f0f\u66ff\u6362\u3002\u201d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u8282\u5c0f\u7ed3<\/h2>\n\n\n\n<p>\u8fd9\u9898\u7684\u6838\u5fc3\u4e0d\u662f\u6b63\u5219\u672c\u8eab\uff0c\u800c\u662f\u5148\u628a\u95ee\u9898\u62c6\u5f00\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u6309\u5217\u628a\u5b57\u7b26\u8bfb\u51fa\u6765\u3002<br>\u7b2c\u4e8c\u6b65\uff0c\u628a\u201c\u5939\u5728\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u4e4b\u95f4\u7684\u8fde\u7eed\u7b26\u53f7\u201d\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\u3002<\/p>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u628a\u6574\u9898\u8bb0\u6210\u4e00\u53e5\u8bdd\uff1a<\/p>\n\n\n\n<p><strong>\u5148\u6309\u5217\u89e3\u7801\uff0c\u518d\u7528\u6b63\u5219\u6e05\u6d17\u3002<\/strong><\/p>\n\n\n\n<p>\u5bf9\u5e94\u4ee3\u7801\u7ed3\u6784\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import re\n\nn, m = map(int, input().split())\nmatrix = &#91;input() for _ in range(n)]\n\ndecoded = \"\"\nfor col in range(m):\n    for row in range(n):\n        decoded += matrix&#91;row]&#91;col]\n\nprint(re.sub(r'(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])', ' ', decoded))\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ec3\u4e60<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u81ea\u5df1\u505a\u4e00\u4e2a\u5c0f\u7ec3\u4e60\uff0c\u5148\u4e0d\u8981\u770b\u7b54\u6848\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee<\/h3>\n\n\n\n<p>\u5047\u8bbe\u8f93\u5165\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>3 3\na$1\nb#2\nc 3\n<\/code><\/pre>\n\n\n\n<p>\u8bf7\u4f60\u5148\u624b\u52a8\u5199\u51fa\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6309\u5217\u8bfb\u51fa\u6765\u7684\u539f\u59cb\u5b57\u7b26\u4e32\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u66ff\u6362\u89c4\u5219\u5904\u7406\u4e4b\u540e\u7684\u6700\u7ec8\u5b57\u7b26\u4e32\u662f\u4ec0\u4e48<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u63d0\u793a<\/h3>\n\n\n\n<p>\u5148\u5206\u4e09\u5217\u8bfb\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c 0 \u5217\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u7b2c 1 \u5217\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u7b2c 2 \u5217\u662f\u4ec0\u4e48<\/li>\n<\/ul>\n\n\n\n<p>\u62fc\u6210\u5b8c\u6574\u5b57\u7b26\u4e32\u540e\uff0c\u518d\u89c2\u5bdf\uff1a<\/p>\n\n\n\n<p>\u54ea\u4e9b\u975e\u5b57\u6bcd\u6570\u5b57\u5b57\u7b26\uff0c\u662f\u521a\u597d\u5939\u5728\u4e24\u4e2a\u5b57\u6bcd\u6570\u5b57\u4e4b\u95f4\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8fd9\u6761\u6b63\u5219\u8981\u7528 <code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code><\/h2>\n\n\n\n<p>\u5728\u4e0a\u4e00\u9898\u91cc\uff0c\u6211\u4eec\u7528\u5230\u7684\u6b63\u5219\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u5f88\u591a\u521d\u5b66\u8005\u770b\u5230\u8fd9\u91cc\u6700\u56f0\u60d1\u7684\u5730\u65b9\uff0c\u4e0d\u662f\u4e2d\u95f4\u90a3\u4e00\u6bb5 <code>[^A-Za-z0-9]+<\/code>\uff0c\u800c\u662f\u5de6\u53f3\u4e24\u8fb9\u8fd9\u4e24\u4e2a\u5199\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=...)\n(?=...)\n<\/code><\/pre>\n\n\n\n<p>\u770b\u8d77\u6765\u5b83\u4eec\u597d\u50cf\u4e5f\u53c2\u4e0e\u4e86\u5339\u914d\uff0c\u4f46\u53c8\u597d\u50cf\u6ca1\u6709\u771f\u6b63\u201c\u62ff\u8d70\u201d\u5b57\u7b26\u3002\u8fd9\u4e2a\u611f\u89c9\u5176\u5b9e\u662f\u5bf9\u7684\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e00\u8282\u5c31\u4e13\u95e8\u8bb2\u6e05\u695a\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b83\u4eec\u5230\u5e95\u662f\u5e72\u4ec0\u4e48\u7684<\/li>\n\n\n\n<li>\u4e3a\u4ec0\u4e48\u5b83\u4eec\u53ea\u68c0\u67e5\u5de6\u53f3\uff0c\u4e0d\u628a\u5de6\u53f3\u5b57\u7b26\u4e5f\u4e00\u8d77\u5339\u914d\u8fdb\u53bb<\/li>\n\n\n\n<li>\u5982\u679c\u4e0d\u7528\u5b83\u4eec\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\u95ee\u9898<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5148\u8bf4\u7ed3\u8bba\uff1a\u5b83\u4eec\u662f\u201c\u53ea\u68c0\u67e5\u3001\u4e0d\u541e\u5b57\u7b26\u201d\u7684\u6761\u4ef6<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5148\u628a\u5b83\u4eec\u8bb0\u6210\u4e00\u53e5\u6700\u76f4\u767d\u7684\u8bdd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>(?&lt;=...)<\/code>\uff1a\u68c0\u67e5\u5de6\u8fb9\u662f\u4e0d\u662f\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6<\/li>\n\n\n\n<li><code>(?=...)<\/code>\uff1a\u68c0\u67e5\u53f3\u8fb9\u662f\u4e0d\u662f\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6<\/li>\n<\/ul>\n\n\n\n<p>\u91cd\u70b9\u5728\u201c\u68c0\u67e5\u201d\u4e24\u4e2a\u5b57\u3002<\/p>\n\n\n\n<p>\u5b83\u4eec\u4e0d\u662f\u6765\u53d6\u5b57\u7b26\u7684\uff0c\u800c\u662f\u6765\u5224\u65ad\u201c\u8fd9\u4e2a\u4f4d\u7f6e\u5468\u56f4\u5bf9\u4e0d\u5bf9\u201d\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u4e24\u4e2a\u4e1c\u897f\u867d\u7136\u5199\u5728\u6b63\u5219\u91cc\u9762\uff0c\u4f46\u5b83\u4eec\u672c\u8eab\u4e0d\u5360\u7528\u5339\u914d\u5185\u5bb9\uff0c\u4e0d\u4f1a\u628a\u5b57\u7b26\u5305\u542b\u8fdb\u6700\u7ec8\u66ff\u6362\u8303\u56f4\u91cc\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5148\u770b\u4e2d\u95f4\u771f\u6b63\u8981\u66ff\u6362\u7684\u90e8\u5206\u662f\u8c01<\/h2>\n\n\n\n<p>\u5728\u8fd9\u6761\u6b63\u5219\u91cc\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u771f\u6b63\u8981\u5339\u914d\u3001\u8981\u66ff\u6362\u7684\u6838\u5fc3\uff0c\u5176\u5b9e\u662f\u4e2d\u95f4\u8fd9\u6bb5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;^A-Za-z0-9]+\n<\/code><\/pre>\n\n\n\n<p>\u5b83\u8868\u793a\uff1a<\/p>\n\n\n\n<p>\u201c\u8fde\u7eed\u7684\u4e00\u6bb5\u975e\u5b57\u6bcd\u6570\u5b57\u5b57\u7b26\u201d\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$#\n#  %\n   @@@\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e9b\u90fd\u53ef\u80fd\u88ab\u5b83\u5339\u914d\u5230\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u9898\u76ee\u5e76\u4e0d\u662f\u8bf4\u201c\u6240\u6709\u7b26\u53f7\u90fd\u66ff\u6362\u201d\uff0c\u800c\u662f\u8bf4\uff1a<\/p>\n\n\n\n<p><strong>\u53ea\u6709\u5f53\u8fd9\u6bb5\u7b26\u53f7\u5de6\u8fb9\u662f\u5b57\u6bcd\u6570\u5b57\u3001\u53f3\u8fb9\u4e5f\u662f\u5b57\u6bcd\u6570\u5b57\u65f6\uff0c\u624d\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\u3002<\/strong><\/p>\n\n\n\n<p>\u6240\u4ee5\u5de6\u53f3\u4e24\u8fb9\u5c31\u9700\u8981\u52a0\u201c\u6761\u4ef6\u5224\u65ad\u201d\u3002<\/p>\n\n\n\n<p>\u8fd9\u65f6 <code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> \u5c31\u6d3e\u4e0a\u7528\u573a\u4e86\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><code>(?&lt;=...)<\/code> \u662f\u4ec0\u4e48\uff1a\u5411\u5de6\u770b\u4e00\u773c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u76f4\u767d\u7406\u89e3<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<p>\u201c\u5f53\u524d\u4f4d\u7f6e\u5de6\u8fb9\uff0c\u7d27\u6328\u7740\u7684\u90a3\u4e2a\u5b57\u7b26\uff0c\u5fc5\u987b\u662f\u5b57\u6bcd\u6216\u6570\u5b57\u3002\u201d<\/p>\n\n\n\n<p>\u6ce8\u610f\uff0c\u8fd9\u53e5\u8bdd\u91cc\u8bf4\u7684\u662f\u201c\u5de6\u8fb9\u662f\u201d\uff0c\u4e0d\u662f\u201c\u628a\u5de6\u8fb9\u8fd9\u4e2a\u5b57\u7b26\u4e5f\u6293\u8fdb\u6765\u201d\u3002<\/p>\n\n\n\n<p>\u5b83\u53ea\u662f\u770b\u4e00\u773c\u5de6\u8fb9\u5408\u4e0d\u5408\u683c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53ef\u4ee5\u8fd9\u6837\u60f3\u8c61<\/h3>\n\n\n\n<p>\u5047\u8bbe\u5b57\u7b26\u4e32\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This$#is\n<\/code><\/pre>\n\n\n\n<p>\u5f53\u6b63\u5219\u626b\u63cf\u5230 <code>$<\/code> \u8fd9\u91cc\u65f6\uff0c\u5b83\u8981\u5224\u65ad\u8fd9\u6bb5 <code>$#<\/code> \u80fd\u4e0d\u80fd\u4f5c\u4e3a\u66ff\u6362\u76ee\u6807\u3002<\/p>\n\n\n\n<p>\u5b83\u4f1a\u5148\u770b <code>$<\/code> \u5de6\u8fb9\u7684\u5b57\u7b26\u662f\u8c01\u3002<\/p>\n\n\n\n<p>\u5de6\u8fb9\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>s\n<\/code><\/pre>\n\n\n\n<p><code>s<\/code> \u662f\u5b57\u6bcd\uff0c\u7b26\u5408 <code>[A-Za-z0-9]<\/code>\uff0c\u6240\u4ee5\u5de6\u8fb9\u6761\u4ef6\u901a\u8fc7\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u8fd9\u4e2a <code>s<\/code> \u53ea\u662f\u88ab\u201c\u68c0\u67e5\u5230\u4e86\u201d\uff0c\u5e76\u6ca1\u6709\u88ab\u5339\u914d\u8fdb\u53bb\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><code>(?=...)<\/code> \u662f\u4ec0\u4e48\uff1a\u5411\u53f3\u770b\u4e00\u773c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u76f4\u767d\u7406\u89e3<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<p>\u201c\u5f53\u524d\u4f4d\u7f6e\u53f3\u8fb9\uff0c\u7d27\u6328\u7740\u7684\u90a3\u4e2a\u5b57\u7b26\uff0c\u5fc5\u987b\u662f\u5b57\u6bcd\u6216\u6570\u5b57\u3002\u201d<\/p>\n\n\n\n<p>\u540c\u6837\uff0c\u5b83\u4e5f\u53ea\u662f\u68c0\u67e5\u53f3\u8fb9\uff0c\u4e0d\u628a\u53f3\u8fb9\u5b57\u7b26\u5305\u542b\u8fdb\u5339\u914d\u7ed3\u679c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u63a5\u7740\u521a\u624d\u7684\u4f8b\u5b50<\/h3>\n\n\n\n<p>\u8fd8\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>This$#is\n<\/code><\/pre>\n\n\n\n<p>\u4e2d\u95f4 <code>$#<\/code> \u8fd9\u6bb5\u5339\u914d\u5b8c\u4ee5\u540e\uff0c\u6b63\u5219\u8fd8\u8981\u68c0\u67e5\u8fd9\u6bb5\u540e\u9762\u7d27\u6328\u7740\u7684\u662f\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57\u3002<\/p>\n\n\n\n<p>\u540e\u9762\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>i\n<\/code><\/pre>\n\n\n\n<p><code>i<\/code> \u662f\u5b57\u6bcd\uff0c\u6240\u4ee5\u53f3\u8fb9\u6761\u4ef6\u4e5f\u901a\u8fc7\u3002<\/p>\n\n\n\n<p>\u4e8e\u662f\u6574\u6bb5 <code>$#<\/code> \u7b26\u5408\u8981\u6c42\uff0c\u53ef\u4ee5\u88ab\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8bf4\u5b83\u4eec\u201c\u4e0d\u541e\u5b57\u7b26\u201d<\/h2>\n\n\n\n<p>\u8fd9\u662f\u6700\u5173\u952e\u7684\u4e00\u70b9\u3002<\/p>\n\n\n\n<p>\u6b63\u5219\u91cc\u6709\u4e24\u7c7b\u4e1c\u897f\uff0c\u4f60\u53ef\u4ee5\u5148\u8fd9\u6837\u533a\u5206\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u7c7b\uff1a\u771f\u6b63\u5339\u914d\u5b57\u7b26\u7684<\/h3>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a\n\\d\n&#91;A-Z]\n&#91;^A-Za-z0-9]+\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e9b\u90fd\u4f1a\u771f\u6b63\u53bb\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u4e9b\u5b57\u7b26\uff0c\u5339\u914d\u5230\u7684\u5185\u5bb9\u4f1a\u8fdb\u5165\u201c\u672c\u6b21\u5339\u914d\u7ed3\u679c\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u7c7b\uff1a\u53ea\u5224\u65ad\u4f4d\u7f6e\u6761\u4ef6\u7684<\/h3>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>^\n$\n\\b\n(?=...)\n(?&lt;=...)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e9b\u4e0d\u8d1f\u8d23\u62ff\u5b57\u7b26\uff0c\u53ea\u8d1f\u8d23\u5224\u65ad\u201c\u8fd9\u91cc\u662f\u4e0d\u662f\u4e00\u4e2a\u5408\u9002\u7684\u4f4d\u7f6e\u201d\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5 <code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> \u6709\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u540d\u5b57\uff0c\u53eb\uff1a<\/p>\n\n\n\n<p><strong>\u96f6\u5bbd\u65ad\u8a00<\/strong><\/p>\n\n\n\n<p>\u4f60\u73b0\u5728\u4e0d\u7528\u6b7b\u8bb0\u8fd9\u4e2a\u672f\u8bed\uff0c\u4f46\u8981\u7406\u89e3\u201c\u96f6\u5bbd\u201d\u8fd9\u4e09\u4e2a\u5b57\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b83\u6709\u4f5c\u7528<\/li>\n\n\n\n<li>\u4f46\u5b83\u672c\u8eab\u4e0d\u5360\u5b57\u7b26\u5bbd\u5ea6<\/li>\n\n\n\n<li>\u5b83\u4e0d\u4f1a\u628a\u5b57\u7b26\u5403\u8fdb\u53bb<\/li>\n<\/ul>\n\n\n\n<p>\u201c\u5bbd\u5ea6\u201d\u4f60\u53ef\u4ee5\u6682\u65f6\u7406\u89e3\u6210\u201c\u5b9e\u9645\u5360\u4e86\u51e0\u4e2a\u5b57\u7b26\u7684\u4f4d\u7f6e\u201d\u3002<\/p>\n\n\n\n<p>\u5b83\u5360 0 \u4e2a\u5b57\u7b26\uff0c\u6240\u4ee5\u53eb\u96f6\u5bbd\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7528\u4e00\u4e2a\u66f4\u5f62\u8c61\u7684\u6bd4\u55bb\u7406\u89e3<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u628a\u6574\u4e2a\u5339\u914d\u8fc7\u7a0b\u60f3\u6210\u201c\u6293\u53d6\u4e2d\u95f4\u90a3\u6bb5\u7b26\u53f7\u201d\u3002<\/p>\n\n\n\n<p>\u800c <code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> \u50cf\u4e24\u4e2a\u95e8\u536b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de6\u8fb9\u95e8\u536b\u68c0\u67e5\uff1a\u4f60\u524d\u9762\u662f\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n\n\n\n<li>\u53f3\u8fb9\u95e8\u536b\u68c0\u67e5\uff1a\u4f60\u540e\u9762\u662f\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n<\/ul>\n\n\n\n<p>\u53ea\u6709\u4e24\u4e2a\u95e8\u536b\u90fd\u70b9\u5934\uff0c\u4e2d\u95f4\u8fd9\u4e00\u6bb5\u7b26\u53f7\u624d\u80fd\u88ab\u653e\u8fdb\u53bb\u5339\u914d\u7ed3\u679c\u91cc\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u95e8\u536b\u81ea\u5df1\u4e0d\u4f1a\u8ddf\u7740\u4e00\u8d77\u88ab\u6293\u8fdb\u53bb\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u540e\u66ff\u6362\u7684\uff0c\u53ea\u6709\u4e2d\u95f4\u90a3\u6bb5\u7b26\u53f7\uff0c\u4e0d\u5305\u62ec\u5de6\u53f3\u4e24\u8fb9\u7684\u5b57\u6bcd\u6570\u5b57\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u76f4\u63a5\u770b\u4e00\u4e2a\u5b8c\u6574\u4f8b\u5b50<\/h2>\n\n\n\n<p>\u770b\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A$#B\n<\/code><\/pre>\n\n\n\n<p>\u6211\u4eec\u7528\u8fd9\u6761\u6b63\u5219\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u6765\u5339\u914d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u770b\u4e2d\u95f4\u8c01\u53ef\u80fd\u5339\u914d<\/h3>\n\n\n\n<p>\u4e2d\u95f4 <code>$#<\/code> \u7b26\u5408\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;^A-Za-z0-9]+\n<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a\u5b83\u4eec\u90fd\u4e0d\u662f\u5b57\u6bcd\u6570\u5b57\uff0c\u800c\u4e14\u662f\u8fde\u7eed\u7684\u4e00\u6bb5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u68c0\u67e5\u5de6\u8fb9<\/h3>\n\n\n\n<p><code>$<\/code> \u5de6\u8fb9\u662f <code>A<\/code>\uff0c\u662f\u5b57\u6bcd\u6570\u5b57\uff0c\u5de6\u8fb9\u901a\u8fc7\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff1a\u68c0\u67e5\u53f3\u8fb9<\/h3>\n\n\n\n<p><code>#<\/code> \u53f3\u8fb9\u662f <code>B<\/code>\uff0c\u662f\u5b57\u6bcd\u6570\u5b57\uff0c\u53f3\u8fb9\u901a\u8fc7\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u7ec8\u5339\u914d\u7ed3\u679c<\/h3>\n\n\n\n<p>\u6700\u7ec8\u88ab\u5339\u914d\u5230\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$#\n<\/code><\/pre>\n\n\n\n<p>\u4e0d\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A$#B\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5c31\u662f\u201c\u53ea\u68c0\u67e5\u5de6\u53f3\uff0c\u4f46\u4e0d\u628a\u5de6\u53f3\u5b57\u7b26\u4e00\u8d77\u5339\u914d\u8fdb\u53bb\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u679c\u5b83\u4eec\u4e5f\u628a\u5de6\u53f3\u5b57\u7b26\u7b97\u8fdb\u53bb\uff0c\u4f1a\u51fa\u4ec0\u4e48\u95ee\u9898<\/h2>\n\n\n\n<p>\u5982\u679c\u5de6\u53f3\u5b57\u7b26\u4e5f\u88ab\u5339\u914d\u8fdb\u53bb\uff0c\u90a3\u4e48\u66ff\u6362\u65f6\u5c31\u4f1a\u628a\u539f\u672c\u5e94\u8be5\u4fdd\u7559\u7684\u5b57\u6bcd\u6570\u5b57\u4e00\u8d77\u66ff\u6362\u6389\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u8fd8\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A$#B\n<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u6574\u4e2a <code>A$#B<\/code> \u90fd\u88ab\u5339\u914d\uff0c\u7136\u540e\u66ff\u6362\u6210\u4e00\u4e2a\u7a7a\u683c\uff0c\u90a3\u7ed3\u679c\u5c31\u53d8\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code> \n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u663e\u7136\u4e0d\u5bf9\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u771f\u6b63\u60f3\u8981\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A B\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fdd\u7559\u5de6\u8fb9\u7684 <code>A<\/code><\/li>\n\n\n\n<li>\u4fdd\u7559\u53f3\u8fb9\u7684 <code>B<\/code><\/li>\n\n\n\n<li>\u53ea\u628a\u4e2d\u95f4 <code>$#<\/code> \u6362\u6210\u4e00\u4e2a\u7a7a\u683c<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u91cc\u5fc5\u987b\u8ba9\u5de6\u53f3\u5b57\u7b26\u201c\u53c2\u4e0e\u6761\u4ef6\u5224\u65ad\u201d\uff0c\u4f46\u201c\u4e0d\u53c2\u4e0e\u66ff\u6362\u5185\u5bb9\u201d\u3002<\/p>\n\n\n\n<p>\u8fd9\u6b63\u662f <code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> \u6700\u9002\u5408\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u76f4\u63a5\u628a\u5de6\u53f3\u5199\u8fdb\u666e\u901a\u5339\u914d\u91cc<\/h2>\n\n\n\n<p>\u5f88\u591a\u521d\u5b66\u8005\u4f1a\u81ea\u7136\u60f3\u5230\uff0c\u80fd\u4e0d\u80fd\u5199\u6210\u8fd9\u79cd\u6837\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;A-Za-z0-9]&#91;^A-Za-z0-9]+&#91;A-Za-z0-9]\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u5199\u6cd5\u8868\u9762\u4e0a\u770b\u4e5f\u50cf\u662f\uff1a<\/p>\n\n\n\n<p>\u201c\u5de6\u5b57\u6bcd\u6570\u5b57 + \u4e2d\u95f4\u7b26\u53f7 + \u53f3\u5b57\u6bcd\u6570\u5b57\u201d<\/p>\n\n\n\n<p>\u4f46\u5b83\u548c\u524d\u9762\u7684\u65ad\u8a00\u5199\u6cd5\uff0c\u672c\u8d28\u4e0a\u4e0d\u4e00\u6837\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u8fd9\u4e2a\u5199\u6cd5\u4f1a\u628a\u4e09\u90e8\u5206\u90fd\u771f\u6b63\u5339\u914d\u8fdb\u53bb\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5339\u914d\u7ed3\u679c\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A$#B\n<\/code><\/pre>\n\n\n\n<p>\u800c\u4e0d\u662f\u5355\u72ec\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$#\n<\/code><\/pre>\n\n\n\n<p>\u90a3\u4f60\u5982\u679c\u505a\u66ff\u6362\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>re.sub(r'&#91;A-Za-z0-9]&#91;^A-Za-z0-9]+&#91;A-Za-z0-9]', ' ', s)\n<\/code><\/pre>\n\n\n\n<p>\u5c31\u4f1a\u628a\u5de6\u53f3\u5b57\u6bcd\u6570\u5b57\u4e5f\u66ff\u6362\u6389\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e0d\u7b26\u5408\u9898\u610f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5bf9\u6bd4\u4e00\u4e0b\uff0c\u4e24\u79cd\u5199\u6cd5\u5230\u5e95\u5dee\u5728\u54ea\u91cc<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5199\u6cd5\u4e00\uff1a\u666e\u901a\u5339\u914d<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;A-Za-z0-9]&#91;^A-Za-z0-9]+&#91;A-Za-z0-9]\n<\/code><\/pre>\n\n\n\n<p>\u542b\u4e49\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de6\u8fb9\u5b57\u6bcd\u6570\u5b57\u4e5f\u8981\u5339\u914d<\/li>\n\n\n\n<li>\u4e2d\u95f4\u7b26\u53f7\u4e5f\u8981\u5339\u914d<\/li>\n\n\n\n<li>\u53f3\u8fb9\u5b57\u6bcd\u6570\u5b57\u4e5f\u8981\u5339\u914d<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u7ec8\u6574\u6bb5\u90fd\u8fdb\u5165\u5339\u914d\u7ed3\u679c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5199\u6cd5\u4e8c\uff1a\u65ad\u8a00 + \u666e\u901a\u5339\u914d<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u542b\u4e49\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de6\u8fb9\u5b57\u6bcd\u6570\u5b57\u53ea\u8d1f\u8d23\u68c0\u67e5<\/li>\n\n\n\n<li>\u4e2d\u95f4\u7b26\u53f7\u624d\u662f\u771f\u6b63\u8981\u5339\u914d\u7684\u5185\u5bb9<\/li>\n\n\n\n<li>\u53f3\u8fb9\u5b57\u6bcd\u6570\u5b57\u4e5f\u53ea\u8d1f\u8d23\u68c0\u67e5<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u7ec8\u53ea\u6709\u4e2d\u95f4\u7b26\u53f7\u8fdb\u5165\u5339\u914d\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c\u4e8c\u79cd\u624d\u662f\u8fd9\u9898\u771f\u6b63\u9700\u8981\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f60\u53ef\u4ee5\u628a\u5b83\u7406\u89e3\u6210\u201c\u951a\u5b9a\u4e2d\u95f4\uff0c\u4e0d\u541e\u4e24\u8fb9\u201d<\/h2>\n\n\n\n<p>\u8fd9\u53e5\u8bdd\u5f88\u9002\u5408\u8bb0\u5fc6\uff1a<\/p>\n\n\n\n<p><strong>\u7528\u524d\u540e\u65ad\u8a00\uff0c\u662f\u4e3a\u4e86\u951a\u5b9a\u4e2d\u95f4\u90a3\u4e00\u6bb5\u7684\u4e0a\u4e0b\u6587\uff0c\u4f46\u4e0d\u541e\u6389\u4e0a\u4e0b\u6587\u5b57\u7b26\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684\u201c\u4e0a\u4e0b\u6587\u201d\u5c31\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de6\u8fb9\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u53f3\u8fb9\u662f\u4ec0\u4e48<\/li>\n<\/ul>\n\n\n\n<p>\u800c\u6211\u4eec\u771f\u6b63\u5173\u5fc3\u3001\u771f\u6b63\u8981\u6539\u6389\u7684\uff0c\u662f\u4e2d\u95f4\u90a3\u6bb5\u7b26\u53f7\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u518d\u770b\u51e0\u4e2a\u5c0f\u4f8b\u5b50<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b 1<\/h3>\n\n\n\n<p>\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a#$b\n<\/code><\/pre>\n\n\n\n<p>\u5339\u914d\u5230\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#$\n<\/code><\/pre>\n\n\n\n<p>\u66ff\u6362\u540e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a b\n<\/code><\/pre>\n\n\n\n<p>\u5de6\u53f3\u7684 <code>a<\/code> \u548c <code>b<\/code> \u4e0d\u4f1a\u6d88\u5931\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b 2<\/h3>\n\n\n\n<p>\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#$ab\n<\/code><\/pre>\n\n\n\n<p>\u524d\u9762\u7684 <code>#$<\/code> \u5de6\u8fb9\u6ca1\u6709\u5b57\u6bcd\u6570\u5b57\uff0c\u6240\u4ee5\u4e0d\u5339\u914d\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e0d\u80fd\u53ea\u770b\u4e2d\u95f4\u662f\u7b26\u53f7\uff0c\u8fd8\u5f97\u770b\u5de6\u53f3\u6761\u4ef6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b 3<\/h3>\n\n\n\n<p>\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ab#$ \n<\/code><\/pre>\n\n\n\n<p>\u540e\u9762\u7684 <code>#$ <\/code>\u53f3\u8fb9\u6ca1\u6709\u5b57\u6bcd\u6570\u5b57\uff0c\u6240\u4ee5\u4e5f\u4e0d\u5339\u914d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b 4<\/h3>\n\n\n\n<p>\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ab#$cd\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc <code>#$<\/code> \u5de6\u53f3\u90fd\u662f\u5b57\u6bcd\u6570\u5b57\uff0c\u6240\u4ee5\u4f1a\u5339\u914d\u5e76\u66ff\u6362\u6210\u7a7a\u683c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ab cd\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u548c\u201c\u4f4d\u7f6e\u201d\u6709\u4ec0\u4e48\u5173\u7cfb<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u628a\u6b63\u5219\u5339\u914d\u60f3\u6210\u8fd9\u6837\uff1a<\/p>\n\n\n\n<p>\u5b83\u4e0d\u662f\u53ea\u4f1a\u76ef\u7740\u5b57\u7b26\u770b\uff0c\u5b83\u4e5f\u4f1a\u76ef\u7740\u201c\u5b57\u7b26\u4e4b\u95f4\u7684\u4f4d\u7f6e\u201d\u770b\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>abc\n<\/code><\/pre>\n\n\n\n<p>\u5176\u5b9e\u53ef\u4ee5\u60f3\u8c61\u6210\u6709\u5f88\u591a\u4f4d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>|a|b|c|\n<\/code><\/pre>\n\n\n\n<p><code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> \u7ecf\u5e38\u5c31\u662f\u5728\u8fd9\u4e9b\u201c\u4f4d\u7f6e\u201d\u4e0a\u505a\u5224\u65ad\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e2a\u4f4d\u7f6e\u5de6\u8fb9\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u8fd9\u4e2a\u4f4d\u7f6e\u53f3\u8fb9\u662f\u4ec0\u4e48<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u5b83\u4eec\u624d\u4e0d\u9700\u8981\u771f\u7684\u628a\u5b57\u7b26\u62ff\u8fdb\u6765\uff0c\u5b83\u4eec\u53ea\u662f\u5728\u67d0\u4e2a\u4f4d\u7f6e\u4e0a\u68c0\u67e5\u5468\u56f4\u73af\u5883\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u89d2\u5ea6\u4e00\u65e6\u7406\u89e3\u4e86\uff0c\u4f60\u5c31\u4f1a\u66f4\u5bb9\u6613\u660e\u767d\u201c\u4e3a\u4ec0\u4e48\u65ad\u8a00\u4e0d\u541e\u5b57\u7b26\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5728\u8fd9\u9053\u9898\u91cc\uff0c\u66ff\u6362\u65f6\u5230\u5e95\u66ff\u6362\u4e86\u4ec0\u4e48<\/h2>\n\n\n\n<p>\u8fd8\u662f\u90a3\u6761\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import re\n\nresult = re.sub(r'(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])', ' ', decoded)\n<\/code><\/pre>\n\n\n\n<p><code>re.sub()<\/code> \u4f1a\u628a\u201c\u5339\u914d\u5230\u7684\u5185\u5bb9\u201d\u66ff\u6362\u6210\u7a7a\u683c\u3002<\/p>\n\n\n\n<p>\u800c\u8fd9\u6761\u6b63\u5219\u91cc\uff0c\u771f\u6b63\u5339\u914d\u5230\u7684\u5185\u5bb9\u53ea\u6709\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;^A-Za-z0-9]+\n<\/code><\/pre>\n\n\n\n<p>\u5de6\u53f3\u4e24\u4e2a\u65ad\u8a00\u53ea\u662f\u63d0\u4f9b\u5339\u914d\u6761\u4ef6\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u540e\u88ab\u6362\u6389\u7684\u53ea\u662f\u4e2d\u95f4\u90a3\u6bb5\u7b26\u53f7\u3002<\/p>\n\n\n\n<p>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u7ed3\u679c\u521a\u597d\u7b26\u5408\u9898\u610f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u521d\u5b66\u8005\u6700\u5bb9\u6613\u6df7\u6dc6\u7684\u70b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u79cd\u8bef\u89e3\uff1a\u6211\u90fd\u5199\u8fdb\u6b63\u5219\u91cc\u4e86\uff0c\u4e3a\u4ec0\u4e48\u5b83\u4e0d\u7b97\u5339\u914d\u5185\u5bb9<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u6b63\u5219\u91cc\u9762\u4e0d\u662f\u6240\u6709\u90e8\u5206\u90fd\u4ee3\u8868\u201c\u62ff\u5b57\u7b26\u201d\u3002<\/p>\n\n\n\n<p>\u6709\u4e9b\u662f\u201c\u62ff\u5b57\u7b26\u201d\uff0c\u6709\u4e9b\u662f\u201c\u5224\u65ad\u6761\u4ef6\u201d\u3002<\/p>\n\n\n\n<p><code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> \u5c31\u5c5e\u4e8e\u540e\u8005\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u79cd\u8bef\u89e3\uff1a\u65e2\u7136\u5b83\u68c0\u67e5\u4e86\u5de6\u8fb9\u53f3\u8fb9\uff0c\u4e3a\u4ec0\u4e48\u66ff\u6362\u65f6\u4e0d\u628a\u5de6\u53f3\u4e5f\u4e00\u8d77\u6539\u6389<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u66ff\u6362\u51fd\u6570\u53ea\u66ff\u6362\u201c\u771f\u6b63\u5339\u914d\u5230\u7684\u90e8\u5206\u201d\u3002<\/p>\n\n\n\n<p>\u65ad\u8a00\u53ea\u662f\u9644\u52a0\u6761\u4ef6\uff0c\u4e0d\u5c5e\u4e8e\u6700\u7ec8\u5339\u914d\u6587\u672c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u79cd\u8bef\u89e3\uff1a\u90a3\u5b83\u5230\u5e95\u6709\u6ca1\u6709\u4f5c\u7528<\/h3>\n\n\n\n<p>\u5f53\u7136\u6709\u4f5c\u7528\uff0c\u800c\u4e14\u4f5c\u7528\u5f88\u5927\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6ca1\u6709\u8fd9\u4e24\u4e2a\u65ad\u8a00\uff0c\u6b63\u5219\u5c31\u53ea\u4f1a\u627e\u5230\u201c\u4efb\u610f\u8fde\u7eed\u7b26\u53f7\u201d\uff0c\u90a3\u9898\u76ee\u8981\u6c42\u5c31\u4e0d\u51c6\u786e\u4e86\u3002<\/p>\n\n\n\n<p>\u5b83\u4eec\u7684\u4f5c\u7528\u4e0d\u662f\u201c\u63d0\u4f9b\u5b57\u7b26\u201d\uff0c\u800c\u662f\u201c\u9650\u5236\u5339\u914d\u8303\u56f4\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u8282\u5c0f\u7ed3<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u8282\u6700\u91cd\u8981\u7684\u4e0d\u662f\u80cc\u672f\u8bed\uff0c\u800c\u662f\u6293\u4f4f\u4e0b\u9762\u8fd9\u53e5\u8bdd\uff1a<\/p>\n\n\n\n<p><strong><code>(?&lt;=...)<\/code> \u548c <code>(?=...)<\/code> 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class=\"wp-block-list\">\n<li>\u5de6\u8fb9\u5148\u68c0\u67e5\uff1a\u524d\u9762\u5f97\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n\n\n\n<li>\u4e2d\u95f4\u518d\u5339\u914d\uff1a\u6293\u4e00\u6bb5\u8fde\u7eed\u7b26\u53f7<\/li>\n\n\n\n<li>\u53f3\u8fb9\u518d\u68c0\u67e5\uff1a\u540e\u9762\u4e5f\u5f97\u662f\u5b57\u6bcd\u6570\u5b57<\/li>\n<\/ul>\n\n\n\n<p>\u6700\u7ec8\u66ff\u6362\u6389\u7684\uff0c\u53ea\u6709\u4e2d\u95f4\u8fd9\u6bb5\u8fde\u7eed\u7b26\u53f7\u3002<\/p>\n\n\n\n<p>\u4f60\u628a\u5b83\u8bb0\u6210\u4e00\u53e5\u66f4\u77ed\u7684\u8bdd\u4e5f\u53ef\u4ee5\uff1a<\/p>\n\n\n\n<p><strong>\u524d\u540e\u65ad\u8a00\u53ea\u770b\u4e24\u8fb9\uff0c\u4e2d\u95f4\u8868\u8fbe\u5f0f\u624d\u662f\u771f\u6b63\u88ab\u66ff\u6362\u7684\u5185\u5bb9\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ec3\u4e60<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u81ea\u5df1\u5148\u60f3\uff0c\u4e0d\u8981\u6025\u7740\u770b\u7b54\u6848\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee 1<\/h3>\n\n\n\n<p>\u5b57\u7b26\u4e32\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A@@B\n<\/code><\/pre>\n\n\n\n<p>\u7528\u8fd9\u6761\u6b63\u5219\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(?&lt;=&#91;A-Za-z0-9])&#91;^A-Za-z0-9]+(?=&#91;A-Za-z0-9])\n<\/code><\/pre>\n\n\n\n<p>\u5339\u914d\u5230\u7684\u5230\u5e95\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>A@@B\n<\/code><\/pre>\n\n\n\n<p>\u8fd8\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@@\n<\/code><\/pre>\n\n\n\n<p>\u8bf7\u4f60\u5148\u81ea\u5df1\u5224\u65ad\u539f\u56e0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u63d0\u793a<\/h3>\n\n\n\n<p>\u60f3\u6e05\u695a\u4e24\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n<ol 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