{"id":475,"date":"2020-09-26T10:46:02","date_gmt":"2020-09-26T02:46:02","guid":{"rendered":"http:\/\/39.96.58.60\/?p=475"},"modified":"2022-10-18T16:39:14","modified_gmt":"2022-10-18T08:39:14","slug":"leetcode-841-%e9%92%a5%e5%8c%99%e5%92%8c%e6%88%bf%e9%97%b4","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=475","title":{"rendered":"Leetcode 841. \u94a5\u5319\u548c\u623f\u95f4"},"content":{"rendered":"

\u6709 N<\/code> \u4e2a\u623f\u95f4\uff0c\u5f00\u59cb\u65f6\u4f60\u4f4d\u4e8e 0<\/code> \u53f7\u623f\u95f4\u3002\u6bcf\u4e2a\u623f\u95f4\u6709\u4e0d\u540c\u7684\u53f7\u7801\uff1a0\uff0c1\uff0c2\uff0c...\uff0cN-1<\/code>\uff0c\u5e76\u4e14\u623f\u95f4\u91cc\u53ef\u80fd\u6709\u4e00\u4e9b\u94a5\u5319\u80fd\u4f7f\u4f60\u8fdb\u5165\u4e0b\u4e00\u4e2a\u623f\u95f4\u3002<\/p>\n

\u5728\u5f62\u5f0f\u4e0a\uff0c\u5bf9\u4e8e\u6bcf\u4e2a\u623f\u95f4 i<\/code> \u90fd\u6709\u4e00\u4e2a\u94a5\u5319\u5217\u8868 rooms[i]<\/code>\uff0c\u6bcf\u4e2a\u94a5\u5319 rooms[i][j]<\/code> \u7531 [0,1\uff0c...\uff0cN-1]<\/code> \u4e2d\u7684\u4e00\u4e2a\u6574\u6570\u8868\u793a\uff0c\u5176\u4e2d N = rooms.length<\/code>\u3002 \u94a5\u5319 rooms[i][j] = v<\/code> \u53ef\u4ee5\u6253\u5f00\u7f16\u53f7\u4e3a v<\/code> \u7684\u623f\u95f4\u3002<\/p>\n

\u6700\u521d\uff0c\u9664 0<\/code> \u53f7\u623f\u95f4\u5916\u7684\u5176\u4f59\u6240\u6709\u623f\u95f4\u90fd\u88ab\u9501\u4f4f\u3002<\/p>\n

\u4f60\u53ef\u4ee5\u81ea\u7531\u5730\u5728\u623f\u95f4\u4e4b\u95f4\u6765\u56de\u8d70\u52a8\u3002<\/p>\n

\u5982\u679c\u80fd\u8fdb\u5165\u6bcf\u4e2a\u623f\u95f4\u8fd4\u56de true<\/code>\uff0c\u5426\u5219\u8fd4\u56de false<\/code>\u3002<\/p>\n

    <\/ol>\n

    \u793a\u4f8b 1\uff1a<\/strong><\/p>\n

    \u8f93\u5165: <\/strong>[[1],[2],[3],[]]\n\n\u8f93\u51fa: <\/strong>true\n\n\u89e3\u91ca:  <\/strong>\n\n\u6211\u4eec\u4ece 0 \u53f7\u623f\u95f4\u5f00\u59cb\uff0c\u62ff\u5230\u94a5\u5319 1\u3002\n\n\u4e4b\u540e\u6211\u4eec\u53bb 1 \u53f7\u623f\u95f4\uff0c\u62ff\u5230\u94a5\u5319 2\u3002\n\n\u7136\u540e\u6211\u4eec\u53bb 2 \u53f7\u623f\u95f4\uff0c\u62ff\u5230\u94a5\u5319 3\u3002\n\n\u6700\u540e\u6211\u4eec\u53bb\u4e86 3 \u53f7\u623f\u95f4\u3002\n\n\u7531\u4e8e\u6211\u4eec\u80fd\u591f\u8fdb\u5165\u6bcf\u4e2a\u623f\u95f4\uff0c\u6211\u4eec\u8fd4\u56de true\u3002\n\n<\/pre>\n
    \u793a\u4f8b 2\uff1a<\/strong><\/p>\n
    \u8f93\u5165\uff1a<\/strong>[[1,3],[3,0,1],[2],[0]]\n\n\u8f93\u51fa\uff1a<\/strong>false\n\n\u89e3\u91ca\uff1a<\/strong>\u6211\u4eec\u4e0d\u80fd\u8fdb\u5165 2 \u53f7\u623f\u95f4\u3002\n\n<\/pre>\n
    \u63d0\u793a\uff1a<\/strong><\/p>\n
      \n
    1. 1 <= rooms.length <= 1000<\/code><\/li>\n
    2. 0 <= rooms[i].length <= 1000<\/code><\/li>\n
    3. \u6240\u6709\u623f\u95f4\u4e2d\u7684\u94a5\u5319\u6570\u91cf\u603b\u8ba1\u4e0d\u8d85\u8fc7 3000<\/code>\u3002<\/li>\n<\/ol>\n
      **\u96be\u5ea6**: Medium<\/p>\n
      **\u6807\u7b7e**: \u6df1\u5ea6\u4f18\u5148\u641c\u7d22\u3001 \u56fe\u3001<\/p>\n
      \n
      \n# -*- coding: utf-8 -*-\n# @Author  : LG\n\n\"\"\"\n\u6267\u884c\u7528\u65f6\uff1a80 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8687.03% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a14.6 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8610.98% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u6df1\u5ea6\u4f18\u5148\u904d\u5386\uff0c\u9012\u5f52\n\"\"\"\nclass Solution:\n    def canVisitAllRooms(self, rooms: List[List[int]]) -> bool:\n        record = set()\n        def visit_room(key):\n            record.add(key)\n            now_keys = rooms[key]\n            for key in now_keys:\n                if key not in record:\n                    visit_room(key)\n\n        visit_room(0)\n        if len(record) == len(rooms):\n            return True\n        else:\n            return False<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
      \u6709 N \u4e2a\u623f\u95f4\uff0c\u5f00\u59cb\u65f6\u4f60\u4f4d\u4e8e 0 \u53f7\u623f\u95f4\u3002\u6bcf\u4e2a\u623f\u95f4\u6709\u4e0d\u540c\u7684\u53f7\u7801\uff1a0\uff0c1\uff0c2\uff0c…\uff0cN-1\uff0c\u5e76\u4e14\u623f\u95f4\u91cc\u53ef\u80fd\u6709\u4e00…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/475"}],"collection":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=475"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/475\/revisions"}],"predecessor-version":[{"id":476,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/475\/revisions\/476"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=475"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}