{"id":592,"date":"2026-07-06T21:29:36","date_gmt":"2026-07-06T13:29:36","guid":{"rendered":"https:\/\/mitongxue.cn\/?p=592"},"modified":"2026-07-06T21:29:36","modified_gmt":"2026-07-06T13:29:36","slug":"%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%ad%90%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/mitongxue.cn\/index.php\/2026\/07\/06\/%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%ad%90%e4%b8%b2\/","title":{"rendered":"\u5b57\u7b26\u4e32\u5b50\u4e32"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u56fa\u5b9a\u957f\u5ea6\u5b50\u4e32\uff08\u6ed1\u52a8\u7a97\u53e3\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ed9\u5b9a\u5b57\u7b26\u4e32 <code>s<\/code>\uff0c\u622a\u53d6\u957f\u5ea6 <code>len<\/code> \u7684\u6240\u6709\u8fde\u7eed\u5b50\u4e32 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u903b\u8f91\uff1a\u8d77\u70b9 i \u8303\u56f4 <code>0 ~ s.length - len<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function getSubStr(str, len){\n\tconst res=&#91;];\n\tconst n = str.length;\n\tif(len&lt;=0 || len > n) return res;\n\tfor(let i=0; i&lt;=n-len; i++){\n\t\tconst sub = str.slice(i,i+len);\n\t\tres.push(sub);\n\t}\n\treturn res;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7for\u5faa\u73af\u548cslice\u622a\u53d6\u6307\u5b9a\u957f\u5ea6\u5b57\u7b26\u4e32\uff0c\u6ed1\u52a8<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u751f\u6210\u5b57\u7b26\u4e32<strong>\u6240\u6709\u8fde\u7eed\u5b50\u4e32<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u76f8\u5f53\u4e8e\u904d\u5386\u4e86\u6240\u6709\u53ef\u80fd\u7684\u6ed1\u52a8\u7a97\u53e3<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5305\u542b\u957f\u5ea6 1\u30012\u30013\u2026 \u5168\u90e8\u8fde\u7eed\u7247\u6bb5 \u601d\u8def\uff1a\u5916\u5c42\u63a7\u5236\u5b50\u4e32\u957f\u5ea6 L\uff0c\u5185\u5c42\u904d\u5386\u8d77\u70b9 i<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function getAllSubStr(s){\n\tconst res=&#91;];\n\tconst n = s.length;\n\tfor(let j = 1;j &lt;= n; j++){\n\t\t\/\/\u76f8\u5f53\u4e8e\u904d\u5386\u4e86\u6240\u6709\u53ef\u80fd\u7684\u6ed1\u52a8\u7a97\u53e3\n\t\tfor(let i=0; i&lt;= n-j; i++){\n\t\t\tconst sub = str.slice(i,i+l);\n\t\t\tres.push(sub);\n\t\t}\n\t}\n\treturn res;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u56fa\u5b9a\u957f\u5ea6\u5b50\u4e32\uff08\u6ed1\u52a8\u7a97\u53e3\uff09 \u7ed9\u5b9a\u5b57\u7b26\u4e32 s\uff0c\u622a\u53d6..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,11],"tags":[50],"class_list":["post-592","post","type-post","status-publish","format-standard","hentry","category-js","category-front","tag-50"],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"author_info":{"info":["\u9648 \u67d0\u4eba"]},"category_info":"<a href=\"https:\/\/mitongxue.cn\/index.php\/category\/front\/js\/\" rel=\"category tag\">JS<\/a> <a href=\"https:\/\/mitongxue.cn\/index.php\/category\/front\/\" rel=\"category tag\">\u524d\u7aef<\/a>","tag_info":"\u524d\u7aef","comment_count":"0","_links":{"self":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/comments?post=592"}],"version-history":[{"count":1,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/592\/revisions"}],"predecessor-version":[{"id":593,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/592\/revisions\/593"}],"wp:attachment":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/media?parent=592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/categories?post=592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/tags?post=592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}