{"id":127641,"date":"2020-06-15T13:19:59","date_gmt":"2020-06-15T05:19:59","guid":{"rendered":"http:\/\/4563.org\/?p=127641"},"modified":"2020-06-15T13:19:59","modified_gmt":"2020-06-15T05:19:59","slug":"%e5%be%ae%e8%bd%af%e9%9d%a2%e8%af%95%e7%9c%9f%e9%a2%98%e9%9d%a2%e8%af%95%e5%ae%98%e6%94%b9%e7%bc%96-leetcode-%e6%80%9d%e8%b7%af%ef%bc%88%e5%8a%a8%e6%80%81%e8%a7%84%e5%88%92%e7%af%87%ef%bc%89","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=127641","title":{"rendered":"\u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leetcode \u601d\u8def\uff08\u52a8\u6001\u89c4\u5212\u7bc7\uff09"},"content":{"rendered":"
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\u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leetcode \u601d\u8def\uff08\u52a8\u6001\u89c4\u5212\u7bc7\uff09 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : longSwordMan <\/span> <\/i> 9<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5728\u4e0a\u4e00\u4e2a\u5e16\u5b50\u4e3b\u8981\u548c\u5927\u5bb6\u5206\u4eab\u4e86\u5237 leetcode \u7684\u6b63\u786e\u59ff\u52bf\uff0c\u6536\u5230\u4e86\u5f88\u4e0d\u9519\u7684\u53cd\u9988\uff0c\u6240\u4ee5\u5e94\u9080\u7ee7\u7eed\u7ed9\u5927\u5bb6\u8fdb\u884c\u6df1\u5165\u7684\u4e13\u680f\u5206\u4eab\u3002\u4eca\u5929\u4e3b\u8981\u662f\u52a8\u6001\u89c4\u5212\u7bc7\uff0c\u63a5\u4e0b\u6765\u8fd8\u4f1a\u9646\u7eed\u66f4\u65b0\u94fe\u8868\u7bc7\uff0c\u54c8\u5e0c\u7bc7\u7b49\uff0c\u5927\u5bb6\u53ef\u4ee5\u5173\u6ce8\u4e00\u4e0b\u3002\u5982\u679c\u5728\u6b64\u8fc7\u7a0b\u4e2d\u6709\u95ee\u9898\u5e0c\u671b\u80fd\u591f\u4e0e\u6211\u6df1\u5165\u63a2\u8ba8\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5fae\u4fe1 longswordMAN \u8fdb\u884c\u4ea4\u6d41\u3002\u90a3\u6211\u4eec\u8bdd\u4e0d\u591a\u8bf4\uff0c\u5f00\u59cb\u6211\u4eec\u7684\u52a8\u6001\u89c4\u5212\u4e13\u9898\u8bb2\u89e3\u3002<\/p>\n

\u5927\u5382\u9762\u8bd5\u4e00\u822c\u4e0d\u4f1a\u53ea\u8003\u5bdf\u5355\u7eaf\u7684\u54c8\u5e0c\u67e5\u8868\uff0c\u800c\u662f\u4f1a\u7ed3\u5408\u66f4\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u6765\u8003\u6216\u8005\u7f8e\u5176\u540d\u66f0\u52a8\u6001\u89c4\u5212\u3002\u5148\u4ece\u7b80\u5355\u7684\u8bf4\uff0c\u770b\u5b8c\u4e4b\u540e\u4f60\u4f1a\u89c9\u5f97\u52a8\u6001\u89c4\u5212\u4e5f\u5c31\u662f\u90a3\u6837\uff0c\u4e4b\u524d\u201c\u754f DP \u5982\u864e\u201d\u7684\u5fc3\u6001\u5b8c\u5168\u6ca1\u6709\u5fc5\u8981\u3002<\/p>\n

\u8a00\u5f52\u6b63\u4f20\uff0c\u5148\u770b\u9898\uff1a\u7ed9\u5b9a\u6574\u6570\u6570\u5217 nums, \u627e\u5230\u8fde\u7eed\u548c\u6700\u5927\u7684\u5b50\u6570\u5217\uff0c\u5e76\u8fd4\u56de\u6570\u5217\u548c\u548c\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff1a Input: [-2,1,-3,4,-1,2,1,-5,4], Output: 6 \u5176\u4e2d[4,-1,2,1]\u52a0\u8d77\u6765\u4e3a 6 \u3002<\/p>\n

\u8fd8\u662f\u8001\u5957\u8def\uff0c\u4e00\u4e2a\u89d2\u6807\u53d8\u4e24\u4e2a\u89d2\u6807\u800c\u5df2\uff0c\u548c\u4e0a\u9898\u4e00\u6837\uff0c\u66b4\u529b\u4e24\u91cd\u5faa\u73af\u5fc5\u6302\u3002<\/p>\n

\u90a3\u4e48\u6b63\u786e\u7684\u89e3\u6cd5\u662f\u600e\u6837\u7684\u5462\uff1f\u80cc\u540e\u8003\u5bdf\u7684\u8981\u70b9\u548c\u9762\u8bd5\u5b98\u6539\u7f16\u7684\u601d\u8def\u53c8\u662f\u4ec0\u4e48\u6837\u5462\uff1f\u5927\u5bb6\u53ef\u4ee5\u5148\u601d\u8003\u4e00\u4e0b\uff0c\u4e2d\u5348 12 \u70b9\u6211\u4f1a\u5728\u8bc4\u8bba\u533a\u4e0e\u5927\u5bb6\u5206\u4eab\u6211\u7684\u89c1\u89e3\u3002<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (9<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : babyformula <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8d2a\u5fc3\u7b97\u6cd5\u5c31\u597d\u4e86\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : yt1523102 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5c0f\u677f\u51f3\u505a\u597d <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : B1ankCat <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6700\u5927\u8fde\u7eed\u5b50\u6570\u7ec4\u95ee\u9898\uff0c\u53ef\u4ee5\u7528\u5206\u6cbb\uff0c\u4e5f\u53ef\u4ee5\u8bb0\u5f55\u524d\u9762\u5904\u7406\u8fc7\u7684\u6700\u5927\u5b50\u6570\u7ec4\u7136\u540e\u548c j+1 \u4f5c\u5bf9\u6bd4\u5b9e\u73b0\u03b8(n)\u7684\u7ebf\u6027\u590d\u6742\u5ea6\uff0c\u54a6\u8fd9\u91cc\u662f\u52a8\u6001\u89c4\u5212\uff0c\u8d70\u9519\u4e86\u8d70\u9519\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : realkenshinji <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    kadane\u2019s algorithm <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : longSwordMan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @B1ankCat \u8fd9\u4e48\u505a\u7a7a\u95f4\u4e0a\u4e0d\u662f\u6700\u4f18\u54e6 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : longSwordMan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @babyformula \u662f\u7684\uff0c\u4f46\u8981\u77e5\u5176\u6240\u4ee5\u7136 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : longSwordMan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u4f30\u8ba1\u4e0d\u5c11\u4eba\u9700\u8981 O(n^3)\u624d\u505a\u5f97\u51fa\u6765\uff0c\u5982\u679c\u6211\u544a\u8bc9\u4f60\uff0c\u8fd9\u9898\u7684\u6700\u4f18\u89e3\u6cd5\u662f O(n)\uff0c\u548b\u4e00\u770b\u662f\u4e0d\u662f\u4e0d\u6562\u76f8\u4fe1\uff1f\u6211\u4eec\u8981\u60f3\u4e0d\u53bb\u66b4\u529b\u89e3\uff0c\u5fc5\u987b\u8981\u5934\u8111\u51b7\u9759\u5206\u6790\uff0c\u8fd9\u4e2a\u5b50\u6570\u5217\u7684\u4e00\u4e9b\u7279\u5f81\u3002\u4f5c\u4e3a\u9762\u8bd5\u5b98\uff0c\u5982\u679c\u8fd9\u9898\u9762\u8bd5\u8005\u4e0d\u5047\u601d\u7d22\u5730\u5199\u7b54\u6848\uff0c\u5982\u679c\u8fd8\u5199\u5bf9\u4e86\uff0c\u5341\u6709\u516b\u4e5d\u662f\u80cc\u7b54\u6848\uff0c\u4f9d\u7136\u662f\u4e0d\u7ed9\u8fc7\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : longSwordMan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5982\u679c\uff0c\u6211\u4eec\u786e\u5b9a\u4e86\u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u4e2a\u5143\u7d20\u4f5c\u4e3a\u5b50\u6570\u5217\u7684\u5143\u7d20\uff0c\u90a3\u4e48\u6211\u4eec\u8be5\u5982\u4f55\u627e\u6700\u5927\u7684\u5b50\u6570\u5217\uff1f\u6211\u4eec\u4e0d\u59a8\u628a\u95ee\u9898\u7b80\u5316\u4e00\u4e0b\uff1a\u5982\u679c\uff0c\u6211\u4eec\u786e\u5b9a\u4e86\u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u4e2a\u5143\u7d20\u4f5c\u4e3a\u5b50\u6570\u5217\u7684\u6700\u672b\u4f4d\u6570\uff0c\u90a3\u4e48\u6211\u4eec\u8be5\u5982\u4f55\u627e\u6700\u5927\u7684\u5b50\u6570\u5217\uff1f\u8fd9\u65f6\u5019\uff0c\u6211\u4eec\u5f80\u524d\u770b\u4e00\u4f4d\uff0c\u5982\u679c\u4ee5 A[i-1]\u4f5c\u4e3a\u5c3e\u6570\u7684\u5b50\u6570\u5217\uff0c\u52a0\u8d77\u6765\u5168\u662f\u8d1f\u503c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u4ee5 A[i]\u4e3a\u5c3e\u6570\u7684\u6700\u5927\u5b50\u6570\u5217\u5c31\u662f{A[i]}\uff0c\u53ea\u6709\u81ea\u8eab\u4e00\u4e2a\u5143\u7d20\uff1b\u53cd\u4e4b\uff0c\u5982\u679c\u548c\u662f\u6b63\u6570\uff0c\u5219\u662f A[i-1]\u4e3a\u5c3e\u6570\u7684\u5b50\u6570\u5217\uff0c\u62fc\u4e0a A[i]\u3002\u90a3\u4e48\u4ee5\u6b64\u7c7b\u63a8\uff0c\u5728\u4e00\u8f6e\u5faa\u73af\u4e2d\uff0c\u6211\u4eec\u627e\u5230\u4ee5 A[i]\u4e3a\u7ec8\u70b9\u7684\u5b50\u6570\u5217\u6700\u5927\u548c\uff0c\u4e00\u8f6e\u5faa\u73af\u8fc7\u540e\uff0c\u5c31\u5f97\u5230\u6211\u4eec\u7684\u7b54\u6848\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : longSwordMan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e3e\u4f8b\uff1a[\u22121, 1, \u22123, 4, \u22121, 2, 1, \u22125, 8]\uff0c\u4ee5\u7b2c\u4e00\u4e2a\u6570\u4e3a\u7ec8\u70b9\uff0c\u6700\u5927\u7684\u5b50\u6570\u5217\u5c31\u662f\u81ea\u5df1\uff0c\u6700\u5927\u548c\u4e3a-1\uff0c\u7b2c\u4e8c\u4e2a\u6570\uff0c\u56e0\u4e3a arr[1]\u7684\u524d\u4e00\u4e2a\u6570 arr[0]\u4e3a\u7ec8\u70b9\u7684\u5b50\u6570\u5217\u662f\u8d1f\u6570\uff0c\u6240\u4ee5\u4ee5 arr[1]\u4e3a\u7ec8\u70b9\uff0c\u6700\u5927\u5b50\u6570\u5217\u5c31\u662f\u81ea\u5df1\uff0c\u548c\u5c31\u662f 1\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0c\u76f4\u5230\u6700\u540e\u4e00\u4f4d\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u5fae\u8f6f\u9762\u8bd5\u771f\u9898+\u9762\u8bd5\u5b98\u6539\u7f16 leet…<\/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\/127641"}],"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=127641"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/127641\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127641"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}