{"id":3098,"date":"2022-05-05T21:41:28","date_gmt":"2022-05-05T13:41:28","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3098"},"modified":"2022-05-05T21:41:28","modified_gmt":"2022-05-05T13:41:28","slug":"%e7%ae%97%e6%b3%95%e5%9f%ba%e7%a1%80%e7%ac%ac19%e5%a4%a9","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=3098","title":{"rendered":"\u7b97\u6cd5\u57fa\u7840\u7b2c19\u5929"},"content":{"rendered":"\n<p><a href=\"https:\/\/leetcode-cn.com\/problems\/bitwise-and-of-numbers-range\/\">201. \u6570\u5b57\u8303\u56f4\u6309\u4f4d\u4e0e<\/a><\/p>\n\n\n\n<p>\u8003\u5bdf\u7684\u8fd8\u662fn &amp; n-1\uff0c\u53ef\u4ee5\u53bb\u9664\u6700\u540e\u4e00\u4e2a\u4f4d1<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><br><em>\/**<br><\/em><em> 201. \u6570\u5b57\u8303\u56f4\u6309\u4f4d\u4e0e<br><\/em><em> \u7ed9\u4f60\u4e24\u4e2a\u6574\u6570 left \u548c right \uff0c\u8868\u793a\u533a\u95f4 [left, right] \uff0c\u8fd4\u56de\u6b64\u533a\u95f4\u5185\u6240\u6709\u6570\u5b57 \u6309\u4f4d\u4e0e \u7684\u7ed3\u679c\uff08\u5305\u542b left \u3001right \u7aef\u70b9\uff09\u3002<br><\/em><em><br><\/em><em><br><\/em><em><br><\/em><em> \u793a\u4f8b 1\uff1a<br><\/em><em><br><\/em><em> \u8f93\u5165\uff1aleft = 5, right = 7<br><\/em><em> \u8f93\u51fa\uff1a4<br><\/em><em> \u793a\u4f8b 2\uff1a<br><\/em><em><br><\/em><em> \u8f93\u5165\uff1aleft = 0, right = 0<br><\/em><em> \u8f93\u51fa\uff1a0<br><\/em><em> \u793a\u4f8b 3\uff1a<br><\/em><em><br><\/em><em> \u8f93\u5165\uff1aleft = 1, right = 2147483647<br><\/em><em> \u8f93\u51fa\uff1a0<br><\/em><em><br><\/em><em><br><\/em><em> \u63d0\u793a\uff1a<br><\/em><em><br><\/em><em> 0 &lt;= left &lt;= right &lt;= 231 - 1<br><\/em><em><br><\/em><em> * <\/em><strong><em>@author <\/em><\/strong><em>zeroheart<br><\/em><em> *<br><\/em><em> *\/<br><\/em>public class Question201 {<br>    \/\/ n &amp; n-1<br>    public int rangeBitwiseAnd(int left, int right) {<br>        while (left &lt; right) right &amp;= right - 1;<br>        return right;<br>    }<br><br>    public static void main(String[] args) {<br>    }<br><br><br><br><br>}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>201. \u6570\u5b57\u8303\u56f4\u6309\u4f4d\u4e0e \u8003\u5bdf\u7684\u8fd8\u662fn &amp; n-1\uff0c\u53ef\u4ee5\u53bb\u9664\u6700\u540e\u4e00\u4e2a\u4f4d1 \/** 201. \u6570\u5b57\u8303\u56f4\u6309 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155],"tags":[193],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3098"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3098"}],"version-history":[{"count":3,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3098\/revisions"}],"predecessor-version":[{"id":3101,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3098\/revisions\/3101"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3098"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3098"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}