{"id":169199,"date":"2020-10-02T11:57:45","date_gmt":"2020-10-02T03:57:45","guid":{"rendered":"http:\/\/4563.org\/?p=169199"},"modified":"2020-10-02T11:57:45","modified_gmt":"2020-10-02T03:57:45","slug":"facebook-%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9a%e4%bc%9a%e8%ae%ae%e5%ae%a4","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=169199","title":{"rendered":"Facebook \u9762\u8bd5\u9898\uff1a\u4f1a\u8bae\u5ba4"},"content":{"rendered":"
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Facebook \u9762\u8bd5\u9898\uff1a\u4f1a\u8bae\u5ba4 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : zzzrf <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\u7ed9\u5b9a\u4e00\u7cfb\u5217\u7684\u4f1a\u8bae\u65f6\u95f4\u95f4\u9694\uff0c\u5305\u62ec\u8d77\u59cb\u548c\u7ed3\u675f\u65f6\u95f4[s1,e1]\uff0c[s2,e2]\uff0c\u2026(si < ei)\uff0c\u786e\u5b9a\u4e00\u4e2a\u4eba\u662f\u5426\u53ef\u4ee5\u53c2\u52a0\u6240\u6709\u4f1a\u8bae\u3002<\/p>\n

\u5728\u7ebf\u505a\u9898\u5730\u5740<\/p>\n

\u6837\u4f8b 1<\/h2>\n
\u8f93\u5165: intervals = [(0,30),(5,10),(15,20)] \u8f93\u51fa: false \u89e3\u91ca: (0,30), (5,10) \u548c (0,30),(15,20) \u8fd9\u4e24\u5bf9\u4f1a\u8bae\u4f1a\u51b2\u7a81 <\/code><\/pre>\n
\u6837\u4f8b 2<\/h2>\n
\u8f93\u5165: intervals = [(5,8),(9,15)] \u8f93\u51fa: true \u89e3\u91ca: \u8fd9\u4e24\u4e2a\u65f6\u95f4\u6bb5\u4e0d\u4f1a\u51b2\u7a81 <\/code><\/pre>\n
\u9898\u89e3<\/h2>\n
\u66b4\u529b\u505a\u6cd5<\/h3>\n
for i in 1:n for j in 1:n \u5224\u65ad i j \u6709\u65e0\u4ea4\u96c6 \u5224\u65ad\u65b9\u6cd5\uff0c\u4e0d\u59a8\u4ee4 i.start<=j.start \u82e5 i.start<=j.start<i.end \u5c31\u4f1a\u53d1\u751f\u51b2\u7a81<\/p>\n
\u65f6\u95f4\u590d\u6742\u5ea6\u662f O(N^2)\u4ece\u66b4\u529b\u51fa\u53d1\uff0c\u6211\u4eec\u60f3\u8be5\u600e\u4e48\u4f18\u5316 \u51b2\u7a81\u7684\u5224\u65ad\u6761\u4ef6\u4e4b\u4e00\u662f i.start<=j.start \u90a3\u6211\u4eec\u53ef\u4ee5\u5148\u5bf9\u65f6\u95f4\u95f4\u9694\u6309\u7167\u5de6\u7aef\u70b9\u5347\u5e8f\u65b9\u5f0f\u8fdb\u884c\u6392\u5e8f\uff0c\u90a3\u4e48\u8fd9\u4e2a\u6761\u4ef6\u80af\u5b9a\u662f\u6ee1\u8db3\u4e86 \u7b2c\u4e8c\u4e2a\u6761\u4ef6 j.start<i.end \uff0c\u6211\u4eec\u53ef\u4ee5\u7edf\u8ba1 0 \u5230 j-1 \u6700\u5927\u7684 end<\/p>\n
\u6392\u5e8f+\u8d2a\u5fc3<\/h3>\n
    \n
  • \u6211\u4eec\u5148\u6309\u7167\u5de6\u7aef\u70b9\u5bf9\u4f1a\u8bae\u65f6\u95f4\u95f4\u9694\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\uff0c\u5982\u679c\u5de6\u7aef\u70b9\u76f8\u540c\u90a3\u4e48\u5c31\u6309\u53f3\u7aef\u70b9\u5347\u5e8f\u6392\u5e8f<\/li>\n
  • \u4ece\u5de6\u5230\u53f3\u626b\u63cf\u4e00\u904d\u4f1a\u8bae\u65f6\u95f4 \u5e76\u7ef4\u62a4\u5f53\u524d\u6700\u5927\u7684\u7ed3\u675f\u65f6\u95f4 maxend\uff0c<\/li>\n
  • \u5982\u679c i.start<maxend \u7684\u8bdd \u56e0\u4e3a\u5df2\u7ecf\u6392\u8fc7\u5e8f\u4e86\uff0c\u4ee4 idx \u7684 end \u662f maxend idx<i idx.start\u2264i.start<idx.end \u8bc1\u660e\u4e24\u4e2a\u65f6\u95f4\u95f4\u9694\u6709\u4ea4\u96c6\uff0c\u6240\u4ee5\u8fd4\u56de false<\/li>\n
  • \u6709\u6ca1\u6709\u53ef\u80fd\u4e24\u4e2a\u65f6\u95f4\u6709\u4ea4\u96c6\uff0c\u4f46\u4e0d\u7b26\u5408\u4e0a\u9762 i.start<maxend \u7684\u5f0f\u5b50\u5462\uff1f idx \u548c i \u65f6\u95f4\u6709\u4ea4\u96c6,\u5373 idx.start\u2264i.start<idx.end A \u5f0f \u6ca1\u6709\u4ea4\u96c6,\u5373 idx.start<idx.end\u2264i.start B \u5f0f \u56e0\u4e3a\u5df2\u7ecf\u6392\u8fc7\u5e8f\u4e86\uff0c\u6240\u4ee5 idx.start\u2264i.start \u6240\u4ee5\u53ea\u8981\u6709\u4e00\u4e2a end \u6bd4 i.start \u5927\u5c31\u4f1a\u53d1\u751f\u4ea4\u96c6\uff0c\u6700\u5bb9\u6613\u6bd4 i.start \u5927\u7684 end \u80af\u5b9a\u662f\u524d\u9762\u6700\u5927\u7684\u4e00\u4e2a end \u6240\u4ee5\u4e0d\u4f1a\u51fa\u73b0\u4e24\u4e2a\u65f6\u95f4\u6709\u4ea4\u96c6\uff0c\u4f46\u4e0d\u7b26\u5408\u4e0a\u9762 i.start<maxend \u7684\u5f0f\u5b50\u7684\u60c5\u51b5 \u6240\u4ee5 i.start<maxend \u8fd9\u4e2a\u5f0f\u5b50\u662f\u4f1a\u8bae\u65f6\u95f4\u51b2\u4e0d\u51b2\u7a81\u7684\u5145\u8981\u6761\u4ef6<\/li>\n<\/ul>\n
    \u590d\u6742\u5ea6\u5206\u6790\uff1aN \u8868\u793a\u6570\u7ec4\u7684\u957f\u5ea6<\/h2>\n
      \n
    • \u65f6\u95f4\u590d\u6742\u5ea6\uff1a\u53d6\u51b3\u4e8e\u6392\u5e8f\u590d\u6742\u5ea6 O(NlogN)\uff0c\u626b\u63cf\u7684\u590d\u6742\u5ea6 O(N)<\/li>\n
    • \u7a7a\u95f4\u590d\u6742\u5ea6\uff1a\u5e76\u6ca1\u6709\u591a\u5f00\u8f9f\u7a7a\u95f4\uff0c\u6240\u4ee5\u8fd8\u662f O(N)\u7684<\/li>\n<\/ul>\n
      \u4ee3\u7801<\/h2>\n
      public class Solution {     \/**      * @param intervals: an array of meeting time intervals      * @return: if a person could attend all meetings      *\/     public boolean canAttendMeetings(List<Interval> intervals) {         \/\/ Write your code here         \/\/\u6309\u8d77\u70b9\u6392\u5e8f         Collections.sort(intervals, new Comparator<Interval>() {             public int compare(Interval x, Interval y) {                 return x.start - y.start;             }         });         \/\/\u7ef4\u62a4\u6700\u5927\u7684\u7ec8\u70b9         int maxend = -1;         for(int i = 0; i < intervals.size(); i++) {             if(intervals.get(i).start < maxend) {                 return false;             }             maxend = Math.max(maxend, intervals.get(i).end);         }         return true;     } } <\/code><\/pre>\n<\/p><\/div>\n
       \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (0<\/span>)        <\/div>\n
       <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
        \n
      • \n","protected":false},"excerpt":{"rendered":"
        Facebook \u9762\u8bd5\u9898\uff1a\u4f1a\u8bae\u5ba4 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/169199"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=169199"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/169199\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=169199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=169199"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=169199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}