{"id":6866,"date":"2022-08-29T19:55:44","date_gmt":"2022-08-29T11:55:44","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=6866"},"modified":"2022-08-31T15:24:55","modified_gmt":"2022-08-31T07:24:55","slug":"%e4%ba%92%e6%8d%a2map%e9%94%ae%e4%b8%8e%e5%80%bc","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=6866","title":{"rendered":"\u4e92\u6362Map\u952e\u4e0e\u503c"},"content":{"rendered":"<p>\u4e00\u822c\u65b9\u6cd5<\/p>\n<pre><code class=\"language-java\">\/\/map must be a bijection in order for this to work properly\npublic static &lt;K,V&gt; HashMap&lt;V,K&gt; reverse(Map&lt;K,V&gt; map) {\n    HashMap&lt;V,K&gt; rev = new HashMap&lt;V, K&gt;();\n    for(Map.Entry&lt;K,V&gt; entry : map.entrySet())\n        rev.put(entry.getValue(), entry.getKey());\n    return rev;\n}\n<\/code><\/pre>\n<p>\u4f18\u96c5\u65b9\u6cd5<\/p>\n<pre><code class=\"language-java\">public static &lt;K,V&gt; HashMap&lt;V,K&gt; reverse(Map&lt;K,V&gt; map) {\n    return map.entrySet().stream().collect(Collectors.toMap(Map.Entry::getValue, Map.Entry::getKey));;\n}<\/code><\/pre>\n<button class=\"simplefavorite-button\" data-postid=\"6866\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>\u4e00\u822c\u65b9\u6cd5 \/\/map must be a bijection in order for this t [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[359],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/6866"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6866"}],"version-history":[{"count":1,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/6866\/revisions"}],"predecessor-version":[{"id":6868,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/6866\/revisions\/6868"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6866"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}