{"id":229665,"date":"2020-12-15T19:41:55","date_gmt":"2020-12-15T11:41:55","guid":{"rendered":"http:\/\/4563.org\/?p=229665"},"modified":"2020-12-15T19:41:55","modified_gmt":"2020-12-15T11:41:55","slug":"%e5%88%b7-leetcode-%e7%bb%8f%e5%b8%b8%e9%99%b7%e5%85%a5%e5%88%b7%e4%ba%86%e5%bf%98%e5%bf%98%e4%ba%86%e5%88%b7%e7%9a%84%e5%b0%b4%e5%b0%ac%e5%b1%80%e9%9d%a2%e6%80%8e%e4%b9%88%e5%8a%9e","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=229665","title":{"rendered":"\u5237 leetcode \u7ecf\u5e38\u9677\u5165\u5237\u4e86\u5fd8\u5fd8\u4e86\u5237\u7684\u5c34\u5c2c\u5c40\u9762\u600e\u4e48\u529e?"},"content":{"rendered":"
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\u5237 leetcode \u7ecf\u5e38\u9677\u5165\u5237\u4e86\u5fd8\u5fd8\u4e86\u5237\u7684\u5c34\u5c2c\u5c40\u9762\u600e\u4e48\u529e? <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : hakunamatata11 <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u653e\u5f03\u5237\u9898\u540e\uff0c\u6211\u62ff\u4e0b\u4e86 4 \u5bb6 offer \u3002\u5206\u522b\u662f\uff1a\u767e\u5ea6\u3001Shopee \uff08\u867e\u76ae\uff09\uff0c\u8611\u83c7\u8857\u548c\u4e00\u5bb6\u521b\u4e1a\u516c\u53f8\uff08\u5b57\u8282\u4e09\u9762\u6302\uff0c\u9e45\u7b80\u5386\u6302\uff09<\/strong>\u3002<\/p>\n

\u6211\u653e\u5f03\u76f2\u76ee\u5237\u9898\u7684\u76f4\u63a5\u539f\u56e0\u662f\u2014\u2014\u6548\u7387\u771f\u7684\u662f\u592a\u4f4e\u4e86<\/strong>\u3002\u6765\u7b97\u7b14\u8d26\uff1a<\/p>\n

    \n
  • LeetCode\/LintCode \u7684\u9898\u76ee\u6709\u8fd1 2000 \u9053\uff0c\u6bcf\u5929\u5237 5 \u9053\uff0c\u5237\u7a7f\u8981\u82b1 1 \u5e74\u534a\u3002<\/li>\n
  • \u9000\u800c\u6c42\u5176\u6b21\uff0c\u628a\u6bcf\u4e2a\u77e5\u8bc6\u70b9\u6240\u8986\u76d6\u7684\u9898\u76ee\u5404\u5237 10 \u9053\uff0c\u8d77\u7801\u4e5f\u8981\u5237 200 \u9053\u9898\uff0c\u63a5\u8fd1 3 \u4e2a\u6708\u3002<\/li>\n<\/ul>\n

    \"\u5237<\/p>\n

    \u6700\u91cd\u8981\u7684\u662f\uff0c\u5c31\u7b97\u4f60\u5237\u4e86 200+\u3001300+\u9898\uff0c\u4e5f\u672a\u5fc5\u80fd\u901a\u8fc7\u7b97\u6cd5\u9762\u8bd5\u3002\u4e0d\u4fe1\u4f60\u70b9\u5f00 LintCode\uff0c\u968f\u673a\u70b9\u5f00 1 \u9898\uff0c\u5982\u679c\u4f60\u80fd\u9a6c\u4e0a\u627e\u5230\u601d\u8def\u5e76\u89e3\u51fa\u7b54\u6848\uff0c\u90a3\u6211\u53ea\u80fd\u8bf4<\/p>\n

    \"\u5237<\/p>\n

    \u5728\u5fc3\u91cc\u9ed8\u5ff5\u4e86\u65e0\u6570\u6b21\u201c\u6211\u662f\u50bb\u903c\u201d\u548c\u8fdb\u884c\u4e86\u65e0\u6570\u6b21\u65e0\u80fd\u72c2\u6012\u540e\uff0c\u6211\u627e\u5230\u4e86\u4e00\u4e2a\u201c\u4f5c\u5f0a\u795e\u5668\u201d\u2014\u2014\u7b97\u6cd5\u5c0f\u6284\u3002<\/strong><\/p>\n

    \u8fd9\u4efd\u7b97\u6cd5\u6a21\u677f\u662f\u300a\u4e5d\u7ae0\u7b97\u6cd5\u73ed\u300b\u7684\u4ee4\u72d0\u51b2\u8001\u5e08\u6574\u7406\uff0c\u5305\u62ec\u4e86\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u7684\u5e38\u89c1\u8003\u70b9\uff0c\u5217\u4e3e\u4e86\u5e38\u89c1\u9898\u76ee\u7684\u4f7f\u7528\u6761\u4ef6\u3001\u590d\u6742\u5ea6\u3001\u4ee3\u7801\u6a21\u677f<\/strong>\uff0c\u8fd8\u9644\u4e0a\u4e86\u53c2\u8003\u4f8b\u9898\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n

    \"\u5237<\/p>\n

    \u63a5\u4e0b\u6765\uff0c\u5949\u4e0a\u8fd9\u4efd\u7b97\u6cd5\u5c0f\u6284\u7684\u7edd\u4f73\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n

    Tips 1\uff1a\u6253\u5f00LintCode\uff0c\u7b5b\u9009\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u77e5\u8bc6\u70b9\u3002<\/strong><\/p>\n

    \"\u5237<\/p>\n

    \u62ff\u4e8c\u5206\u4e3e\u4f8b\u3002<\/p>\n

      \n
    • LintCode14 . \u4e8c\u5206\u67e5\u627e(\u5728\u6392\u5e8f\u7684\u6570\u636e\u96c6\u4e0a\u8fdb\u884c\u4e8c\u5206)<\/li>\n
    • LintCode460. \u5728\u6392\u5e8f\u6570\u7ec4\u4e2d\u627e\u6700\u63a5\u8fd1\u7684 K \u4e2a\u6570(\u5728\u672a\u6392\u5e8f\u7684\u6570\u636e\u96c6\u4e0a\u8fdb\u884c\u4e8c\u5206)<\/li>\n
    • LintCode437.\u4e66\u7c4d\u590d\u5370(\u5728\u7b54\u6848\u96c6\u4e0a\u8fdb\u884c\u4e8c\u5206 )<\/li>\n<\/ul>\n

      \u5957\u4e0a\u6a21\u677f\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\uff1aO(logn)\uff0c\u7a7a\u95f4\u590d\u6742\u5ea6\uff1aO(1)\u3002<\/p>\n

      Tips 2\uff1a\u6839\u636e\u6a21\u677f\uff0c\u505a\u9898\uff1a<\/strong><\/p>\n

       public class Solution {         \/**         * @param A an integer array sorted in ascending order         * @param target an integer         * @return an integer         *\/     public int findPosition(int[] nums, int target) {     if (nums == null || nums.length == 0) {     return -1;             }      int start = 0, end = nums.length - 1;             \/\/ \u8981\u70b9 1: start + 1 < end     while (start + 1 < end) {             \/\/ \u8981\u70b9 2\uff1astart + (end - start) \/ 2     int mid = start + (end - start) \/ 2;                 \/\/ \u8981\u70b9 3\uff1a=, <, > \u5206\u5f00\u8ba8\u8bba\uff0cmid \u4e0d +1 \u4e5f\u4e0d -1     if (nums[mid] == target) {     return mid;                 } else if (nums[mid] < target) {                     start = mid;                 } else {                     end = mid;                 }             }              \/\/ \u8981\u70b9 4: \u5faa\u73af\u7ed3\u675f\u540e\uff0c\u5355\u72ec\u5904\u7406 start \u548c end     if (nums[start] == target) {     return start;             }     if (nums[end] == target) {     return end;             }     return -1;         }     }     <\/code><\/pre>\n
      \u505a\u5b8c\u4f8b\u9898\u540e\u518d\u81ea\u5df1\u627e\u51e0\u9053\u9898\u7ec3\u7ec3\u624b\uff0c\u4f60\u57fa\u672c\u5c31\u80fd\u628a\u8fd9\u5957\u6a21\u677f\u7528\u5f97\u7089\u706b\u7eaf\u9752\u4e86\u3002\u5176\u4ed6\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u77e5\u8bc6\u70b9\u4ee5\u6b64\u7c7b\u63a8\u3002\u7528\u4e86\u4e00\u6b21\u540e\uff0c\u6211\u53ea\u60f3\u8bf4\u2014\u2014\u725b\u903c\uff01<\/p>\n
      \u5f53\u7136\uff0c\u4f7f\u7528\u4ee3\u7801\u6a21\u677f\u89e3\u9898\u7684\u524d\u63d0\u662f\u8981\u5b66\u4f1a\u5224\u65ad\u8fd9\u9053\u9898\u80fd\u7528\u54ea\u79cd\u65b9\u6cd5\u89e3\u9898<\/strong>\uff0c\u4ee4\u72d0\u51b2\u8001\u5e08\u5728\u300a\u4e5d\u7ae0\u7b97\u6cd5\u73ed\u300b\u91cc\u4e5f\u505a\u4e86\u6574\u7406\uff1a<\/p>\n
      \u4e8c\u5206<\/strong><\/p>\n
      \u6392\u5e8f\u6570\u7ec4 (30-40%\u662f\u4e8c\u5206)  \u5f53\u9762\u8bd5\u5b98\u8981\u6c42\u4f60\u627e\u4e00\u4e2a\u6bd4 O(n) \u66f4\u5c0f\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u7b97\u6cd5\u7684\u65f6\u5019(99%)  \u627e\u5230\u6570\u7ec4\u4e2d\u7684\u4e00\u4e2a\u5206\u5272\u4f4d\u7f6e\uff0c\u4f7f\u5f97\u5de6\u534a\u90e8\u5206\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6\uff0c\u53f3\u534a\u90e8\u5206\u4e0d\u6ee1\u8db3(100%)  \u627e\u5230\u4e00\u4e2a\u6700\u5927 \/\u6700\u5c0f\u7684\u503c\u4f7f\u5f97\u67d0\u4e2a\u6761\u4ef6\u88ab\u6ee1\u8db3(90%)  <\/code><\/pre>\n
      \u53cc\u6307\u9488<\/strong><\/p>\n
      \u6ed1\u52a8\u7a97\u53e3 (90%)  \u65f6\u95f4\u590d\u6742\u5ea6\u8981\u6c42 O(n) (80%\u662f\u53cc\u6307\u9488)  \u8981\u6c42\u539f\u5730\u64cd\u4f5c\uff0c\u53ea\u53ef\u4ee5\u4f7f\u7528\u4ea4\u6362\uff0c\u4e0d\u80fd\u4f7f\u7528\u989d\u5916\u7a7a\u95f4 (80%)  \u6709\u5b50\u6570\u7ec4 subarray \/\u5b50\u5b57\u7b26\u4e32 substring \u7684\u5173\u952e\u8bcd (50%)  \u6709\u56de\u6587 Palindrome \u5173\u952e\u8bcd(50%)  <\/code><\/pre>\n
      BFS<\/strong><\/p>\n
      \u62d3\u6251\u6392\u5e8f(100%)  \u51fa\u73b0\u8fde\u901a\u5757\u7684\u5173\u952e\u8bcd(100%)  \u5206\u5c42\u904d\u5386(100%)  \u7b80\u5355\u56fe\u6700\u77ed\u8def\u5f84(100%)  \u7ed9\u5b9a\u4e00\u4e2a\u53d8\u6362\u89c4\u5219\uff0c\u4ece\u521d\u59cb\u72b6\u6001\u53d8\u5230\u7ec8\u6b62\u72b6\u6001\u6700\u5c11\u51e0\u6b65(100%)  <\/code><\/pre>\n
      \u4e8c\u53c9\u6811\u4e0e\u5206\u6cbb<\/strong><\/p>\n
      \u4e8c\u53c9\u6811\u76f8\u5173\u7684\u95ee\u9898 (99%)  \u53ef\u4ee5\u4e00\u5206\u4e3a\u4e8c\u53bb\u5206\u522b\u5904\u7406\u4e4b\u540e\u518d\u5408\u5e76\u7ed3\u679c (100%)  \u6570\u7ec4\u76f8\u5173\u7684\u95ee\u9898 (10%)  <\/code><\/pre>\n
      \u66f4\u591a\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u7684\u4f7f\u7528\u6761\u4ef6\uff0c\u53ef\u4ee5\u542c\u4ee4\u72d0\u51b2\u8001\u5e08\u7684\u514d\u8d39\u8bb2\u5ea7\u300a FB \u9762\u8bd5\u5b98\u63ed\u79d8\u9762\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u5237 100 \u9898\u80dc\u8fc7\u522b\u4eba\u5237 300 \u9898\u300b\u3002<\/p>\n
      \u5982\u679c\u4f60\u80fd\u628a\u8fd9\u5957\u6a21\u677f\u6478\u6e05\u695a\uff0c\u9047\u5230\u9898\u76ee\u57fa\u672c\u90fd\u80fd\u8f7b\u677e\u7834\u89e3\uff0c\u4ece\u5237\u4e86\u5fd8\u3001\u5fd8\u4e86\u5237\u53d8\u6210\u6bcf\u5237\u4e00\u904d\u5c31\u5de9\u56fa\u4e00\u904d\u4ee3\u7801\u6a21\u677f<\/strong>\uff0c\u76f4\u5230\u628a\u5b83\u8bb0\u719f\u8bb0\u900f\uff0c\u5728\u9762\u8bd5\u4e2d\u505a\u5230\u6e38\u5203\u6709\u4f59\u3002<\/p>\n
      \u63a5\u4e0b\u6765\u5206\u4eab\u4e00\u4e2a\u6838\u5fc3\u89c2\u70b9\uff1a\u5237\u9898\u662f\u4e3a\u4e86\u5e94\u5bf9\u9762\u8bd5\uff0c\u56e0\u6b64\u6211\u4eec\u8981\u9488\u5bf9\u6027\u5730\u5237\u9898\uff0c\u4e0d\u5237\u65e0\u610f\u4e49\u7684\u9898<\/strong>\u3002<\/p>\n
      \u6240\u4ee5\uff0c\u9664\u4e86\u80cc\u719f\u6a21\u677f\uff0c\u6211\u5907\u6218\u9762\u8bd5\u7684\u57fa\u672c\u7b56\u7565\u662f\u5728\u9762\u8bd5\u524d 2 \u5468\u7a81\u51fb\u5237\u8be5\u516c\u53f8\u7684\u9762\u8bd5\u771f\u9898\u3001\u9ad8\u9891\u9898<\/strong>\u3002\u53ef\u4ee5\u5728 LintCode \u7684\u9636\u68af\u8bad\u7ec3\u4e0a\u5237\u5bf9\u5e94\u7684\u4f01\u4e1a\u771f\u9898\u3002<\/p>\n
      \"\u5237<\/p>\n
      \u6b63\u5f0f\u6210\u4e3a\u793e\u755c\u540e\uff0c\u6211\u4e5f\u4e0d\u518d\u62b1\u7740\u90a3\u4e48\u529f\u5229\u7684\u5fc3\u6001\u53bb\u5237\u9898\u3002\u73b0\u5728\u6211\u6bcf\u5468\u4f1a\u5237 2-3 \u9053\u9898\uff0c\u66f4\u591a\u7684\u662f\u953b\u70bc\u81ea\u5df1\u7684\u903b\u8f91\u601d\u7ef4\u80fd\u529b\uff0c\u4e5f\u4e3a\u4e86\u9884\u9632\u4e00\u4e9b\u4e0d\u65f6\u4e4b\u9700\uff08\u5982\u8df3\u69fd\uff09\u3002<\/p>\n
      \u73b0\u5728\u5237\u9898\u53cd\u800c\u4f1a\u7ed9\u6211\u4e00\u79cd\u522b\u6837\u7684\u5feb\u4e50\uff0c\u5c24\u5176\u662f\u627e\u5230\u4e86\u4e00\u79cd\u65b0\u7684\u601d\u8def\u89e3\u9898\uff0c\u6216\u662f\u653b\u514b\u4e86\u4e4b\u524d\u4e00\u76f4\u611f\u5230\u5934\u75bc\u7684\u52a8\u6001\u89c4\u5212\u3002<\/p>\n
      \u5f53\u4f60\u83b7\u5f97\u4e86\u8fd9\u79cd\u6ee1\u8db3\u548c\u6210\u5c31\u611f\uff0c\u5237\u9898\u5bf9\u4f60\u6765\u8bf4\u5c31\u4e0d\u518d\u662f\u4e00\u4ef6\u75db\u82e6\u7684\u4e8b\uff0c\u4e5f\u5c31\u4e0d\u4f1a\u9677\u5165\u201c\u5237\u4e86\u5fd8\u5fd8\u4e86\u5237\u201d\u7684\u56f0\u5c40\u4e86\u3002<\/strong><\/p>\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":"
        \u5237 leetcode \u7ecf\u5e38\u9677\u5165\u5237\u4e86…<\/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\/229665"}],"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=229665"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/229665\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=229665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=229665"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=229665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}