{"id":180832,"date":"2024-05-08T20:43:20","date_gmt":"2024-05-08T12:43:20","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/180832.html"},"modified":"2024-05-08T20:43:28","modified_gmt":"2024-05-08T12:43:28","slug":"r%e8%af%ad%e8%a8%80-26%e4%b8%aa%e5%ad%97%e6%af%8d%e6%80%8e%e4%b9%88%e8%a1%a8%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/180832.html","title":{"rendered":"R\u8bed\u8a00   26\u4e2a\u5b57\u6bcd\u600e\u4e48\u8868\u793a"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27070210\/a85b61cd-e75c-47c7-99c1-60fa2bad542c.webp\" alt=\"R\u8bed\u8a00   26\u4e2a\u5b57\u6bcd\u600e\u4e48\u8868\u793a\" \/><\/p>\n<p><p>\u5728R\u8bed\u8a00\u4e2d\uff0c\u8868\u8fbe26\u4e2a\u82f1\u6587\u5b57\u6bcd\u53ef\u4ee5\u901a\u8fc7\u5185\u7f6e\u51fd\u6570 <strong><code>letters<\/code><\/strong> \u548c <strong><code>LETTERS<\/code><\/strong> \u5b9e\u73b0\uff0c\u7b80\u5355\u6765\u8bf4\uff0c<strong><code>letters<\/code><\/strong> \u751f\u6210\u5c0f\u5199\u5b57\u6bcd\uff08a-z\uff09\uff0c\u800c <strong><code>LETTERS<\/code><\/strong> \u751f\u6210\u5927\u5199\u5b57\u6bcd\uff08A-Z\uff09\u3002\u8fd9\u4e24\u4e2a\u51fd\u6570\u90fd\u662fR\u8bed\u8a00\u4e2d\u975e\u5e38\u6709\u7528\u7684\u5185\u7f6e\u53d8\u91cf\uff0c\u7279\u522b\u5728\u5904\u7406\u6587\u672c\u6570\u636e\u3001\u8fdb\u884c\u7f16\u7801\u8f6c\u6362\u3001\u751f\u6210\u6570\u636e\u6837\u672c\u7b49\u60c5\u51b5\u4e0b\u3002<\/p>\n<\/p>\n<p><p>\u5c55\u5f00\u6765\u8bf4\uff0c<code>letters<\/code> \u548c <code>LETTERS<\/code> \u4e0d\u9700\u8981\u7279\u5b9a\u7684\u51fd\u6570\u8c03\u7528\u8bed\u6cd5\uff0c\u5b83\u4eec\u662fR\u8bed\u8a00\u9ed8\u8ba4\u63d0\u4f9b\u7684\u5b57\u7b26\u5411\u91cf\u3002\u6b64\u7279\u6027\u6781\u5927\u7b80\u5316\u4e86\u5728\u6570\u636e\u5206\u6790\u548c\u7a0b\u5e8f\u7f16\u5199\u65f6\u5bf9\u5b57\u6bcd\u5e8f\u5217\u7684\u9700\u6c42\uff0c\u6bd4\u5982\u5728\u81ea\u52a8\u751f\u6210\u5217\u540d\u3001\u8fdb\u884c\u5faa\u73af\u64cd\u4f5c\u6216\u662f\u5728\u6587\u672c\u5206\u6790\u4e2d\u751f\u6210\u5b57\u6bcd\u9891\u7387\u5206\u5e03\u7b49\u3002\u5b9e\u9645\u4e0a\uff0c\u8fd9\u4e24\u4e2a\u5b57\u7b26\u5411\u91cf\u7684\u8fd0\u7528\u8303\u56f4\u6781\u5e7f\uff0c\u4e0d\u4ec5\u4ec5\u5c40\u9650\u4e8e\u4e0a\u8ff0\u573a\u666f\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u7075\u6d3b\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001LETTERS\u548cletters\u7684\u57fa\u672c\u5e94\u7528<\/h3>\n<\/p>\n<p><p>\u5728R\u8bed\u8a00\u4e2d\u4f7f\u7528<code>letters<\/code>\u548c<code>LETTERS<\/code>\u975e\u5e38\u76f4\u63a5\u4e14\u7b80\u5355\u3002\u6bd4\u5982\uff0c\u5f53\u4f60\u9700\u8981\u6253\u5370\u6240\u6709\u5c0f\u5199\u5b57\u6bcd\u65f6\uff0c\u53ea\u9700\u8f93\u5165<code>letters<\/code>\uff1b\u540c\u7406\uff0c\u8f93\u51fa\u6240\u6709\u5927\u5199\u5b57\u6bcd\uff0c\u8f93\u5165<code>LETTERS<\/code>\u5373\u53ef\u3002\u8fd9\u79cd\u4f7f\u7528\u65b9\u5f0f\u5bf9\u4e8e\u65b0\u624b\u6765\u8bf4\u6781\u5176\u53cb\u597d\uff0c\u4e0d\u9700\u8981\u8bb0\u5fc6\u590d\u6742\u7684\u51fd\u6570\u8bed\u6cd5\u3002<\/p>\n<\/p>\n<p><p>\u6b64\u5916\uff0c<code>letters<\/code>\u548c<code>LETTERS<\/code>\u7684\u5e94\u7528\u4e0d\u6b62\u4e8e\u6b64\uff0c\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u7684\u7d22\u5f15\u6216\u64cd\u4f5c\uff0c\u4ece\u4e2d\u751f\u6210\u4f60\u9700\u8981\u7684\u4efb\u4f55\u5b57\u6bcd\u5e8f\u5217\u3002\u8fd9\u5728\u5904\u7406\u7279\u5b9a\u7684\u6587\u672c\u5904\u7406\u4efb\u52a1\u65f6\u975e\u5e38\u5b9e\u7528\uff0c\u4f8b\u5982\uff0c\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u6570\u636e\u5217\u540d\u6216\u662f\u5728\u6570\u636e\u6e05\u6d17\u8fc7\u7a0b\u4e2d\u6807\u8bb0\u4e0d\u540c\u7c7b\u522b\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u9ad8\u7ea7\u5e94\u7528\u5b9e\u4f8b<\/h3>\n<\/p>\n<p><p>\u5c3d\u7ba1<code>letters<\/code>\u548c<code>LETTERS<\/code>\u672c\u8eab\u7684\u7ed3\u6784\u7b80\u5355\uff0c\u4f46\u5b83\u4eec\u5728\u590d\u6742\u4efb\u52a1\u4e2d\u4e5f\u53d1\u6325\u7740\u4e0d\u53ef\u6216\u7f3a\u7684\u4f5c\u7528\u3002\u901a\u8fc7\u4e0eR\u8bed\u8a00\u7684\u5176\u4ed6\u51fd\u6570\u7ed3\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u6267\u884c\u66f4\u9ad8\u7ea7\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><h4>1. \u6570\u636e\u5217\u547d\u540d<\/h4>\n<\/p>\n<p><p>\u5728\u5bf9\u6570\u636e\u96c6\u8fdb\u884c\u5904\u7406\u65f6\uff0c\u5f80\u5f80\u9700\u8981\u4e3a\u6570\u636e\u96c6\u4e2d\u7684\u5217\u547d\u540d\u3002\u5229\u7528<code>letters<\/code>\u6216<code>LETTERS<\/code>\uff0c\u4f60\u53ef\u4ee5\u5feb\u901f\u751f\u6210\u5217\u540d\u3002\u6bd4\u5982\uff0c\u5982\u679c\u4f60\u670926\u5217\u6570\u636e\u9700\u8981\u547d\u540d\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06<code>LETTERS<\/code>\u7528\u4f5c\u5217\u540d\uff0c\u8fd9\u6837\u6bcf\u4e00\u5217\u7684\u540d\u5b57\u5c31\u662fA\u5230Z\u3002<\/p>\n<\/p>\n<p><h4>2. \u6570\u636e\u5b50\u96c6\u547d\u540d<\/h4>\n<\/p>\n<p><p>\u5bf9\u4e8e\u8f83\u5927\u7684\u6570\u636e\u96c6\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u67d0\u4e9b\u6761\u4ef6\u5c06\u6570\u636e\u5206\u5272\u6210\u591a\u4e2a\u5b50\u96c6\u3002\u5982\u679c\u6bcf\u4e2a\u5b50\u96c6\u90fd\u9700\u8981\u660e\u786e\u7684\u6807\u8bc6\uff0c<code>letters<\/code>\u548c<code>LETTERS<\/code>\u4e5f\u53ef\u4ee5\u6d3e\u4e0a\u7528\u573a\u3002\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u5b50\u96c6\u5206\u914d\u4e00\u4e2a\u5b57\u6bcd\uff0c\u53ef\u4ee5\u4f7f\u5f97\u6570\u636e\u7ba1\u7406\u53d8\u5f97\u66f4\u4e3a\u6e05\u6670\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u7ed3\u5408\u5faa\u73af\u8bed\u53e5\u4f7f\u7528<\/h3>\n<\/p>\n<p><p>R\u8bed\u8a00\u7684\u5faa\u73af\u8bed\u53e5\uff08\u5982<code>for<\/code>\u5faa\u73af\uff09\u548c<code>letters<\/code>\/<code>LETTERS<\/code>\u76f8\u7ed3\u5408\uff0c\u53ef\u4ee5\u5b9e\u73b0\u66f4\u4e3a\u590d\u6742\u7684\u6587\u5b57\u64cd\u4f5c\u548c\u6570\u636e\u5904\u7406\u5de5\u4f5c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7\u5faa\u73af\u8bed\u53e5\u904d\u5386<code>letters<\/code>\uff0c\u5bf9\u6570\u636e\u96c6\u4e2d\u7684\u6bcf\u4e00\u9879\u6309\u5b57\u6bcd\u8fdb\u884c\u5904\u7406\u6216\u5206\u6790\u3002<\/p>\n<\/p>\n<p><p>\u5728\u5b9e\u8df5\u4e2d\uff0c\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u6309\u987a\u5e8f\u5904\u7406\u6216\u68c0\u67e5\u591a\u4e2a\u53d8\u91cf\u3001\u6570\u636e\u6846\u67b6\u7684\u5217\u6216\u884c\u3001\u6216\u662f\u6267\u884c\u6279\u91cf\u64cd\u4f5c\u65f6\u3002\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u8282\u7701\u7f16\u5199\u4ee3\u7801\u7684\u65f6\u95f4\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u6613\u8bfb\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5728\u6587\u672c\u5206\u6790\u4e2d\u7684\u5e94\u7528<\/h3>\n<\/p>\n<p><p>\u6587\u672c\u5206\u6790\u662fR\u8bed\u8a00\u7684\u4e00\u5927\u5e94\u7528\u9886\u57df\uff0c<code>letters<\/code>\u548c<code>LETTERS<\/code>\u5728\u8fd9\u91cc\u7684\u5e94\u7528\u5c24\u4e3a\u5e7f\u6cdb\u3002\u4ece\u6267\u884c\u7b80\u5355\u7684\u5b57\u6bcd\u8ba1\u6570\u5230\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u548c\u5b57\u7b26\u4e32\u64cd\u4f5c\uff0c<code>letters<\/code>\u548c<code>LETTERS<\/code>\u90fd\u80fd\u63d0\u4f9b\u6781\u5927\u7684\u4fbf\u5229\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u5b57\u7b26\u4e32\u5904\u7406\u76f8\u5173\u7684\u51fd\u6570\uff08\u5982<code>gsub<\/code>\u3001<code>strsplit<\/code>\u7b49\uff09\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5bf9\u6587\u672c\u6570\u636e\u7684\u9ad8\u7ea7\u5904\u7406\u9700\u6c42\uff0c\u8b6c\u5982\u7edf\u8ba1\u6587\u672c\u4e2d\u5404\u5b57\u6bcd\u7684\u51fa\u73b0\u9891\u6b21\u3001\u8bc6\u522b\u548c\u66ff\u6362\u7279\u5b9a\u6a21\u5f0f\u7684\u5b57\u6bcd\u7b49\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u603b\u7684\u6765\u8bf4\uff0cR\u8bed\u8a00\u4e2d\u7684<code>letters<\/code>\u548c<code>LETTERS<\/code>\u662f\u975e\u5e38\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5de5\u5177\uff0c\u5b83\u4eec\u4e3a\u6570\u636e\u5904\u7406\u548c\u6587\u672c\u5206\u6790\u63d0\u4f9b\u4e86\u6781\u5927\u7684\u4fbf\u5229\u3002\u65e0\u8bba\u4f60\u662f\u6570\u636e\u5206\u6790\u7684\u521d\u5b66\u8005\u8fd8\u662f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u4e13\u5bb6\uff0c\u638c\u63e1\u5982\u4f55\u9ad8\u6548\u4f7f\u7528\u8fd9\u4e24\u4e2a\u5411\u91cf\uff0c\u90fd\u5c06\u5728\u4f60\u7684R\u8bed\u8a00\u5b66\u4e60\u548c\u5b9e\u8df5\u4e4b\u8def\u4e0a\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>Q: \u5982\u4f55\u5728R\u8bed\u8a00\u4e2d\u8868\u793a26\u4e2a\u5b57\u6bcd\uff1f<\/strong><br \/>\nA: \u5728R\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u5411\u91cf\u6765\u8868\u793a26\u4e2a\u5b57\u6bcd\u3002\u53ef\u4ee5\u4f7f\u7528\u5b57\u6bcd\u8868\u51fd\u6570<code>letters<\/code>\u5f97\u5230\u5c0f\u5199\u5b57\u6bcd\u5e8f\u5217\uff0c\u6216\u4f7f\u7528<code>LETTERS<\/code>\u5f97\u5230\u5927\u5199\u5b57\u6bcd\u5e8f\u5217\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code>lowercase_letters &lt;- letters\nuppercase_letters &lt;- LETTERS\n<\/code><\/pre>\n<p><strong>Q: \u5728R\u8bed\u8a00\u4e2d\uff0c\u5982\u4f55\u5c06\u5b57\u6bcd\u4e0e\u6570\u5b57\u5bf9\u5e94\u8d77\u6765\uff1f<\/strong><br \/>\nA: \u5728R\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u6bcd\u7684ASCII\u7801\u503c\u4e0e\u6570\u5b57\u5bf9\u5e94\u8d77\u6765\u3002\u6bcf\u4e2a\u5b57\u6bcd\u90fd\u6709\u4e00\u4e2a\u7279\u5b9a\u7684ASCII\u7801\u503c\uff0c\u53ef\u4ee5\u901a\u8fc7<code>utf8ToInt<\/code>\u51fd\u6570\u5c06\u5b57\u6bcd\u8f6c\u6362\u4e3aASCII\u7801\uff0c\u6216\u4f7f\u7528<code>intToUtf8<\/code>\u51fd\u6570\u5c06ASCII\u7801\u8f6c\u6362\u4e3a\u5b57\u6bcd\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code>letter &lt;- &quot;A&quot;\nnumeric_value &lt;- utf8ToInt(letter) - utf8ToInt(&quot;A&quot;) + 1\n<\/code><\/pre>\n<p><strong>Q: \u5728R\u8bed\u8a00\u4e2d\uff0c\u5982\u4f55\u6839\u636e\u5b57\u6bcd\u5e8f\u5217\u751f\u6210\u5b57\u7b26\u5411\u91cf\uff1f<\/strong><br \/>\nA: \u5728R\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u6bcd\u5e8f\u5217\u751f\u6210\u5b57\u7b26\u5411\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528\u5192\u53f7\u8fd0\u7b97\u7b26\uff08<code>:<\/code>\uff09\u751f\u6210\u5b57\u6bcd\u7684\u5e8f\u5217\uff0c\u6216\u4f7f\u7528\u5b57\u7b26\u5411\u91cf\u51fd\u6570<code>rep<\/code>\u5c06\u5b57\u6bcd\u91cd\u590d\u591a\u6b21\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u5904\u7406\u51fd\u6570<code>paste<\/code>\u5c06\u591a\u4e2a\u5b57\u6bcd\u62fc\u63a5\u5728\u4e00\u8d77\u751f\u6210\u5b57\u7b26\u4e32\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code>letter_sequence &lt;- &quot;A&quot;:&quot;Z&quot;\nrepeated_letters &lt;- rep(letters, times = 2)\nletter_string &lt;- paste(letters, collapse = &quot;&quot;)\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u5728R\u8bed\u8a00\u4e2d\uff0c\u8868\u8fbe26\u4e2a\u82f1\u6587\u5b57\u6bcd\u53ef\u4ee5\u901a\u8fc7\u5185\u7f6e\u51fd\u6570 letters \u548c LETTERS \u5b9e\u73b0\uff0c\u7b80\u5355\u6765\u8bf4\uff0clette [&hellip;]","protected":false},"author":3,"featured_media":180847,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/180832"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=180832"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/180832\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/180847"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=180832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=180832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=180832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}