{"id":205358,"date":"2025-05-29T16:17:08","date_gmt":"2025-05-29T08:17:08","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205358\/"},"modified":"2025-05-29T16:17:08","modified_gmt":"2025-05-29T08:17:08","slug":"%e5%a6%82%e4%bd%95%e4%b8%8d%e4%bd%bf%e7%94%a8pandas%e5%bf%ab%e9%80%9f%e5%88%86%e7%bb%84%e4%ba%8c%e7%bb%b4%e5%88%97%e8%a1%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205358\/","title":{"rendered":"\u5982\u4f55\u4e0d\u4f7f\u7528Pandas\u5feb\u901f\u5206\u7ec4\u4e8c\u7ef4\u5217\u8868\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4e0d\u4f7f\u7528Pandas\u5feb\u901f\u5206\u7ec4\u4e8c\u7ef4\u5217\u8868\uff1f <\/h1>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

<\/p>\n

\u4e0d\u501f\u52a9 pandas \u5feb\u901f\u5206\u7ec4\u4e8c\u7ef4\u5217\u8868<\/strong><\/p>\n

\u7ed9\u5b9a\u4e00\u4e2a\u5305\u542b\u7ec4\u540d\u548c\u503c\u7684\u4e8c\u7ef4\u5217\u8868\uff0c\u6211\u4eec\u9700\u8981\u6309\u7ec4\u540d\u5bf9\u5217\u8868\u8fdb\u884c\u5feb\u901f\u5206\u7ec4\uff0c\u4e14\u4fdd\u6301\u539f\u6765\u7684\u987a\u5e8f\u3002\u7531\u4e8e\u5217\u8868\u8f83\u5927\uff0c\u6211\u4eec\u5e0c\u671b\u907f\u514d\u4f7f\u7528 pandas\uff0c\u56e0\u4e3a\u5b83\u5728\u5904\u7406\u5927\u6570\u636e\u65f6\u901f\u5ea6\u8f83\u6162\u3002<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u73b0\u6210\u7684\u5e93\u4ee3\u7801\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1a<\/p>\n

def group_name_fun(lst):\n    last=''\n    arr=[]\n    for ii in range(len(lst)):\n        if not lst[ii][0]==last:\n            arr.append(ii)\n            last=lst[ii][0]\n    arr.append(len(lst))\n    lst=[lst[arr[ii-1]:arr[ii]] for ii in range(1, len(arr))]\n    return lst<\/pre>\n
\u6b64\u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u4e8c\u7ef4\u5217\u8868\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5206\u7ec4\u540e\u7684\u5217\u8868\u3002\u5b83\u4e0d\u4f7f\u7528\u5faa\u73af\u904d\u5386\uff0c\u800c\u662f\u901a\u8fc7\u6bd4\u8f83\u76f8\u90bb\u5143\u7d20\u7684\u7ec4\u540d\u6765\u786e\u5b9a\u7ec4\u7684\u8fb9\u754c\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n
data = [['a',33],['a',0],['a',12],['a',3],['b',3],['b',0],['b',77],['c',1],['c',2],['c',5],['c',0],['c',11],['c',19]]\nprint(group_name_fun(data))<\/pre>\n
\u8f93\u51fa\uff1a<\/p>\n
[[33, 0, 12, 3], [3, 0, 77], [1, 2, 5, 0, 11, 19]]<\/pre>\n
\u8be5\u51fd\u6570\u4ee5 o(n) \u7684\u65f6\u95f4\u590d\u6742\u5ea6\u9ad8\u6548\u5730\u5bf9\u5217\u8868\u8fdb\u884c\u5206\u7ec4\uff0c\u5176\u4e2d n \u662f\u5217\u8868\u7684\u957f\u5ea6\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u4e0d\u4f7f\u7528Pandas\u5feb\u901f\u5206\u7ec4\u4e8c\u7ef4\u5217\u8868\uff1f \u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u4e0d\u4f7f\u7528Pandas\u5feb\u901f\u5206\u7ec4\u4e8c...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205358","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205358"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205358\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}