{"id":1089565,"date":"2025-01-08T13:54:38","date_gmt":"2025-01-08T05:54:38","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1089565.html"},"modified":"2025-01-08T13:54:40","modified_gmt":"2025-01-08T05:54:40","slug":"python%e4%b8%ad%e8%be%93%e5%87%ba%e5%a6%82%e4%bd%95%e4%bb%8e%e5%a4%a7%e5%88%b0%e5%b0%8f-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1089565.html","title":{"rendered":"python\u4e2d\u8f93\u51fa\u5982\u4f55\u4ece\u5927\u5230\u5c0f"},"content":{"rendered":"

\"python\u4e2d\u8f93\u51fa\u5982\u4f55\u4ece\u5927\u5230\u5c0f\"<\/p>\n

\u5728Python\u4e2d\uff0c\u60f3\u8981\u5c06\u6570\u636e\u4ece\u5927\u5230\u5c0f\u8f93\u51fa\uff0c\u6709\u51e0\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528sorted()\u51fd\u6570\u3001\u4f7f\u7528sort()\u65b9\u6cd5\u3001\u4f7f\u7528heapq\u6a21\u5757\u3001\u4f7f\u7528pandas\u5e93<\/strong>\u3002\u8fd9\u51e0\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5c06\u6570\u636e\u6309\u964d\u5e8f\u6392\u5217\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u89e3\u91ca\u5b83\u4eec\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528sorted()\u51fd\u6570<\/h3>\n<\/p>\n

sorted()\u51fd\u6570\u7684\u7b80\u4ecb<\/h4>\n<\/p>\n

sorted()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u6392\u5e8f\u51fd\u6570\u4e4b\u4e00\uff0c\u53ef\u4ee5\u5bf9\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002\u8be5\u51fd\u6570\u6709\u4e24\u4e2a\u4e3b\u8981\u53c2\u6570\uff1a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u548c\u4e00\u4e2a\u53ef\u9009\u7684key\u53c2\u6570\u3002\u8981\u5b9e\u73b0\u964d\u5e8f\u6392\u5e8f\uff0c\u53ef\u4ee5\u5c06reverse<\/code>\u53c2\u6570\u8bbe\u7f6e\u4e3aTrue<\/code>\u3002<\/p>\n<\/p>\n

\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n

numbers = [4, 2, 7, 1, 9, 3]<\/p>\n
sorted_numbers = sorted(numbers, reverse=True)<\/p>\n
print(sorted_numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u6570\u5b57\u7684\u5217\u8868numbers<\/code>\uff0c\u5e76\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u5bf9\u5176\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u7ed3\u679c\u662f\u4e00\u4e2a\u65b0\u7684\u5217\u8868sorted_numbers<\/code>\uff0c\u5176\u4e2d\u7684\u5143\u7d20\u6309\u4ece\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u6392\u5217\u3002<\/p>\n<\/p>\n
\u6df1\u5165\u89e3\u6790<\/h4>\n<\/p>\n
sorted()<\/code>\u51fd\u6570\u7684\u5de5\u4f5c\u539f\u7406\u662f\u57fa\u4e8eTimsort\u7b97\u6cd5\uff0c\u8fd9\u662f\u4e00\u79cd\u6df7\u5408\u6392\u5e8f\u7b97\u6cd5\uff0c\u7ed3\u5408\u4e86\u5f52\u5e76\u6392\u5e8f\u548c\u63d2\u5165\u6392\u5e8f\u7684\u4f18\u70b9\u3002sorted()<\/code>\u51fd\u6570\u7684\u6548\u7387\u975e\u5e38\u9ad8\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n log n)\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u6392\u5e8f\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528sort()\u65b9\u6cd5<\/h3>\n<\/p>\n
sort()\u65b9\u6cd5\u7684\u7b80\u4ecb<\/h4>\n<\/p>\n
sort()<\/code>\u65b9\u6cd5\u662f\u5217\u8868\u5bf9\u8c61\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u5c31\u5730\u6392\u5e8f\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u4e0esorted()<\/code>\u51fd\u6570\u4e0d\u540c\uff0csort()<\/code>\u65b9\u6cd5\u4e0d\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u800c\u662f\u5728\u539f\u5217\u8868\u4e0a\u8fdb\u884c\u64cd\u4f5c\u3002\u8981\u5b9e\u73b0\u964d\u5e8f\u6392\u5e8f\uff0c\u540c\u6837\u9700\u8981\u5c06reverse<\/code>\u53c2\u6570\u8bbe\u7f6e\u4e3aTrue<\/code>\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n
numbers = [4, 2, 7, 1, 9, 3]<\/p>\n
numbers.sort(reverse=True)<\/p>\n
print(numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528sort()<\/code>\u65b9\u6cd5\u5bf9\u5217\u8868numbers<\/code>\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u6392\u5e8f\u540e\u7684\u7ed3\u679c\u76f4\u63a5\u5b58\u50a8\u5728\u539f\u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n
\u6df1\u5165\u89e3\u6790<\/h4>\n<\/p>\n
sort()<\/code>\u65b9\u6cd5\u7684\u5e95\u5c42\u5b9e\u73b0\u540c\u6837\u662f\u57fa\u4e8eTimsort\u7b97\u6cd5\uff0c\u56e0\u6b64\u5176\u65f6\u95f4\u590d\u6742\u5ea6\u4e0esorted()<\/code>\u51fd\u6570\u76f8\u540c\uff0c\u4e3aO(n log n)\u3002\u9009\u62e9sorted()<\/code>\u8fd8\u662fsort()<\/code>\u4e3b\u8981\u53d6\u51b3\u4e8e\u662f\u5426\u9700\u8981\u4fdd\u7559\u539f\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528heapq\u6a21\u5757<\/h3>\n<\/p>\n
heapq\u6a21\u5757\u7684\u7b80\u4ecb<\/h4>\n<\/p>\n
heapq<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u5806\u961f\u5217\u7b97\u6cd5\u7684\u5b9e\u73b0\uff0c\u5373\u4f18\u5148\u961f\u5217\u3002\u867d\u7136\u5806\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6811\u72b6\u6570\u636e\u7ed3\u6784\uff0c\u4e3b\u8981\u7528\u4e8e\u6700\u5c0f\u5806\uff08\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff09\uff0c\u4f46\u901a\u8fc7\u5bf9\u5806\u4e2d\u5143\u7d20\u8fdb\u884c\u8d1f\u503c\u5904\u7406\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6700\u5927\u5806\uff0c\u4ece\u800c\u8fbe\u5230\u964d\u5e8f\u6392\u5e8f\u7684\u76ee\u7684\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n
import heapq<\/p>\n
numbers = [4, 2, 7, 1, 9, 3]<\/p>\n
max_heap = [-n for n in numbers]<\/p>\n
heapq.heapify(max_heap)<\/p>\n
sorted_numbers = [-heapq.heappop(max_heap) for _ in range(len(max_heap))]<\/p>\n
print(sorted_numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5c06\u5217\u8868numbers<\/code>\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u53d6\u8d1f\u503c\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u6700\u5927\u5806\u3002\u7136\u540e\uff0c\u901a\u8fc7\u53cd\u5411\u53d6\u51fa\u5143\u7d20\uff0c\u5b9e\u73b0\u964d\u5e8f\u6392\u5e8f\u3002<\/p>\n<\/p>\n
\u6df1\u5165\u89e3\u6790<\/h4>\n<\/p>\n
\u5806\u6392\u5e8f\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n log n)\uff0c\u4e0eTimsort\u76f8\u540c\u3002\u4f7f\u7528heapq<\/code>\u6a21\u5757\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9891\u7e41\u63d2\u5165\u548c\u5220\u9664\u5143\u7d20\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528pandas\u5e93<\/h3>\n<\/p>\n
pandas\u5e93\u7684\u7b80\u4ecb<\/h4>\n<\/p>\n
pandas<\/code>\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5206\u6790\u548c\u5904\u7406\u5e93\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u636e\u64cd\u4f5c\u529f\u80fd\u3002pandas<\/code>\u4e2d\u7684DataFrame<\/code>\u548cSeries<\/code>\u5bf9\u8c61\u5177\u6709\u5185\u7f6e\u7684\u6392\u5e8f\u65b9\u6cd5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5bf9\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h4>\n<\/p>\n
import pandas as pd<\/p>\n
data = {'numbers': [4, 2, 7, 1, 9, 3]}<\/p>\n
df = pd.DataFrame(data)<\/p>\n
sorted_df = df.sort_values(by='numbers', ascending=False)<\/p>\n
print(sorted_df)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u6570\u5b57\u7684DataFrame<\/code>\u5bf9\u8c61df<\/code>\uff0c\u5e76\u4f7f\u7528sort_values()<\/code>\u65b9\u6cd5\u5bf9\u5176\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u7ed3\u679c\u662f\u4e00\u4e2a\u65b0\u7684DataFrame<\/code>\u5bf9\u8c61sorted_df<\/code>\uff0c\u5176\u4e2d\u7684\u5143\u7d20\u6309\u4ece\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u6392\u5217\u3002<\/p>\n<\/p>\n
\u6df1\u5165\u89e3\u6790<\/h4>\n<\/p>\n
pandas<\/code>\u5e93\u7684\u6392\u5e8f\u65b9\u6cd5\u5e95\u5c42\u540c\u6837\u4f7f\u7528\u4e86\u9ad8\u6548\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n log n)\u3002pandas<\/code>\u7684\u4f18\u52bf\u5728\u4e8e\u5176\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u80fd\u529b\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5bf9\u590d\u6742\u6570\u636e\u8fdb\u884c\u5206\u6790\u548c\u5904\u7406\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
\u7ed3\u8bba<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u4f7f\u7528sorted()\u51fd\u6570\u3001\u4f7f\u7528sort()\u65b9\u6cd5\u3001\u4f7f\u7528heapq\u6a21\u5757\u3001\u4f7f\u7528pandas\u5e93<\/strong>\u90fd\u662f\u5b9e\u73b0\u6570\u636e\u964d\u5e8f\u6392\u5e8f\u7684\u6709\u6548\u65b9\u6cd5\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u9700\u6c42\u3002\u5982\u679c\u9700\u8981\u4fdd\u7559\u539f\u5217\u8868\uff0c\u53ef\u4ee5\u9009\u62e9sorted()<\/code>\u51fd\u6570\uff1b\u5982\u679c\u4e0d\u9700\u8981\u4fdd\u7559\u539f\u5217\u8868\uff0c\u53ef\u4ee5\u9009\u62e9sort()<\/code>\u65b9\u6cd5\uff1b\u5982\u679c\u9700\u8981\u9891\u7e41\u63d2\u5165\u548c\u5220\u9664\u5143\u7d20\uff0c\u53ef\u4ee5\u9009\u62e9heapq<\/code>\u6a21\u5757\uff1b\u5982\u679c\u9700\u8981\u5bf9\u590d\u6742\u6570\u636e\u8fdb\u884c\u5206\u6790\u548c\u5904\u7406\uff0c\u53ef\u4ee5\u9009\u62e9pandas<\/code>\u5e93\u3002\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u90fd\u80fd\u9ad8\u6548\u5730\u5b9e\u73b0\u4ece\u5927\u5230\u5c0f\u7684\u6392\u5e8f\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684sort()<\/code>\u65b9\u6cd5\u6216sorted()<\/code>\u51fd\u6570\u5bf9\u5217\u8868\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u5bf9\u4e8esort()<\/code>\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u8c03\u7528\u65f6\u4f20\u9012reverse=True<\/code>\u53c2\u6570\uff0c\u4f8b\u5982\uff1a  <\/p>\n
my_list = [3, 1, 4, 2]\nmy_list.sort(reverse=True)\nprint(my_list)  # \u8f93\u51fa: [4, 3, 2, 1]\n<\/code><\/pre>\n
\u800c\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u65f6\uff0c\u540c\u6837\u53ef\u4ee5\u8bbe\u7f6ereverse<\/code>\u53c2\u6570\uff1a  <\/p>\n
my_list = [3, 1, 4, 2]\nsorted_list = sorted(my_list, reverse=True)\nprint(sorted_list)  # \u8f93\u51fa: [4, 3, 2, 1]\n<\/code><\/pre>\n
\u5982\u4f55\u5728Python\u4e2d\u5bf9\u5b57\u5178\u6309\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\uff1f<\/strong>
\u5bf9\u4e8e\u5b57\u5178\uff0c\u53ef\u4ee5\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u7ed3\u5408lambda<\/code>\u8868\u8fbe\u5f0f\uff0c\u5bf9\u5b57\u5178\u6309\u503c\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002\u793a\u4f8b\u5982\u4e0b\uff1a  <\/p>\n
my_dict = {'apple': 2, 'banana': 3, 'cherry': 1}\nsorted_dict = dict(sorted(my_dict.items(), key=lambda item: item[1], reverse=True))\nprint(sorted_dict)  # \u8f93\u51fa: {'banana': 3, 'apple': 2, 'cherry': 1}\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u5f0f\u80fd\u591f\u6839\u636e\u5b57\u5178\u4e2d\u7684\u503c\u8fdb\u884c\u7075\u6d3b\u7684\u6392\u5e8f\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u964d\u5e8f\u6392\u5217\uff1f<\/strong>
\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u4e5f\u53ef\u4ee5\u901a\u8fc7sorted()<\/code>\u51fd\u6570\u8fdb\u884c\u964d\u5e8f\u6392\u5217\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0csorted()<\/code>\u8fd4\u56de\u7684\u662f\u5b57\u7b26\u7684\u5217\u8868\uff0c\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7join()<\/code>\u65b9\u6cd5\u5c06\u5176\u5408\u5e76\u4e3a\u5b57\u7b26\u4e32\u3002\u793a\u4f8b\u5982\u4e0b\uff1a  <\/p>\n
my_string = "python"\nsorted_string = ''.join(sorted(my_string, reverse=True))\nprint(sorted_string)  # \u8f93\u51fa: 'ytponh'\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5b57\u7b26\u7684\u964d\u5e8f\u6392\u5217\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u60f3\u8981\u5c06\u6570\u636e\u4ece\u5927\u5230\u5c0f\u8f93\u51fa\uff0c\u6709\u51e0\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528sorted()\u51fd\u6570\u3001\u4f7f\u7528sort()\u65b9\u6cd5\u3001\u4f7f […]","protected":false},"author":3,"featured_media":1089579,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1089565"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1089565"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1089565\/revisions"}],"predecessor-version":[{"id":1089580,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1089565\/revisions\/1089580"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1089579"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1089565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1089565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1089565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}