{"id":1046250,"date":"2024-12-31T13:31:39","date_gmt":"2024-12-31T05:31:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1046250.html"},"modified":"2024-12-31T13:31:42","modified_gmt":"2024-12-31T05:31:42","slug":"python%e5%a6%82%e4%bd%95%e5%af%b9%e6%95%b0%e5%80%bc%e8%bf%9b%e8%a1%8c%e5%a4%a7%e5%b0%8f%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1046250.html","title":{"rendered":"python\u5982\u4f55\u5bf9\u6570\u503c\u8fdb\u884c\u5927\u5c0f\u6392\u5e8f"},"content":{"rendered":"

\"python\u5982\u4f55\u5bf9\u6570\u503c\u8fdb\u884c\u5927\u5c0f\u6392\u5e8f\"<\/p>\n

Python\u5bf9\u6570\u503c\u8fdb\u884c\u5927\u5c0f\u6392\u5e8f\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570sorted()\u3001list.sort()\u65b9\u6cd5\u3001\u4ee5\u53ca\u5176\u4ed6\u9ad8\u7ea7\u6392\u5e8f\u7b97\u6cd5\u5982\u5feb\u901f\u6392\u5e8f\u3001\u5f52\u5e76\u6392\u5e8f\u7b49\u3002<\/strong>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u548c\u5b9e\u9645\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570sorted()<\/h3>\n<\/p>\n

Python\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570sorted()\uff0c\u5b83\u53ef\u4ee5\u5bf9\u4efb\u4f55\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n

1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n

numbers = [5, 2, 9, 1, 5, 6]<\/p>\n
sorted_numbers = sorted(numbers)<\/p>\n
print(sorted_numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u5c06\u8f93\u51fa [1, 2, 5, 5, 6, 9]<\/code>\u3002\u8fd9\u4e2a\u51fd\u6570\u9ed8\u8ba4\u662f\u6309\u5347\u5e8f\u6392\u5e8f\u7684\u3002<\/p>\n<\/p>\n
2\u3001\u6309\u964d\u5e8f\u6392\u5e8f<\/h4>\n<\/p>\n
\u5982\u679c\u4f60\u60f3\u6309\u964d\u5e8f\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528 reverse<\/code> \u53c2\u6570\uff1a<\/p>\n<\/p>\n
sorted_numbers = sorted(numbers, reverse=True)<\/p>\n
print(sorted_numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa\u5c06\u662f [9, 6, 5, 5, 2, 1]<\/code>\u3002<\/p>\n<\/p>\n
3\u3001\u5bf9\u590d\u6742\u6570\u636e\u7ed3\u6784\u6392\u5e8f<\/h4>\n<\/p>\n
sorted() \u51fd\u6570\u540c\u6837\u9002\u7528\u4e8e\u590d\u6742\u6570\u636e\u7ed3\u6784\uff0c\u6bd4\u5982\u5305\u542b\u5b57\u5178\u7684\u5217\u8868\uff1a<\/p>\n<\/p>\n
students = [{'name': 'John', 'age': 25}, {'name': 'Alice', 'age': 23}]<\/p>\n
sorted_students = sorted(students, key=lambda student: student['age'])<\/p>\n
print(sorted_students)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u5c06\u6309\u5e74\u9f84\u5347\u5e8f\u6392\u5217\u5b66\u751f\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528list.sort()\u65b9\u6cd5<\/h3>\n<\/p>\n
list.sort() \u65b9\u6cd5\u662f\u76f4\u63a5\u5bf9\u539f\u5217\u8868\u8fdb\u884c\u6392\u5e8f\uff0c\u4e0d\u8fd4\u56de\u65b0\u5217\u8868\u3002<\/p>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
numbers = [5, 2, 9, 1, 5, 6]<\/p>\n
numbers.sort()<\/p>\n
print(numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa [1, 2, 5, 5, 6, 9]<\/code>\u3002<\/p>\n<\/p>\n
2\u3001\u6309\u964d\u5e8f\u6392\u5e8f<\/h4>\n<\/p>\n
numbers.sort(reverse=True)<\/p>\n
print(numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa [9, 6, 5, 5, 2, 1]<\/code>\u3002<\/p>\n<\/p>\n
3\u3001\u5bf9\u590d\u6742\u6570\u636e\u7ed3\u6784\u6392\u5e8f<\/h4>\n<\/p>\n
students = [{'name': 'John', 'age': 25}, {'name': 'Alice', 'age': 23}]<\/p>\n
students.sort(key=lambda student: student['age'])<\/p>\n
print(students)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u5c06\u6309\u5e74\u9f84\u5347\u5e8f\u6392\u5217\u5b66\u751f\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u9ad8\u7ea7\u6392\u5e8f\u7b97\u6cd5<\/h3>\n<\/p>\n
\u867d\u7136\u5185\u7f6e\u7684 sorted() \u548c list.sort() \u65b9\u6cd5\u5df2\u7ecf\u8db3\u591f\u5f3a\u5927\uff0c\u4f46\u4e86\u89e3\u4e00\u4e9b\u9ad8\u7ea7\u6392\u5e8f\u7b97\u6cd5\u5728\u7279\u5b9a\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
1\u3001\u5feb\u901f\u6392\u5e8f\uff08Quick Sort\uff09<\/h4>\n<\/p>\n
\u5feb\u901f\u6392\u5e8f\u662f\u4e00\u79cd\u5206\u6cbb\u7b97\u6cd5\uff0c\u5b83\u5c06\u5217\u8868\u5206\u6210\u8f83\u5c0f\u7684\u4e24\u4e2a\u5b50\u5217\u8868\uff0c\u7136\u540e\u9012\u5f52\u5730\u6392\u5e8f\u5b50\u5217\u8868\u3002<\/p>\n<\/p>\n
def quick_sort(arr):<\/p>\n
    if len(arr) <= 1:<\/p>\n
        return arr<\/p>\n
    pivot = arr[len(arr) \/\/ 2]<\/p>\n
    left = [x for x in arr if x < pivot]<\/p>\n
    middle = [x for x in arr if x == pivot]<\/p>\n
    right = [x for x in arr if x > pivot]<\/p>\n
    return quick_sort(left) + middle + quick_sort(right)<\/p>\n
numbers = [5, 2, 9, 1, 5, 6]<\/p>\n
sorted_numbers = quick_sort(numbers)<\/p>\n
print(sorted_numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa [1, 2, 5, 5, 6, 9]<\/code>\u3002<\/p>\n<\/p>\n
2\u3001\u5f52\u5e76\u6392\u5e8f\uff08Merge Sort\uff09<\/h4>\n<\/p>\n
\u5f52\u5e76\u6392\u5e8f\u4e5f\u662f\u4e00\u79cd\u5206\u6cbb\u7b97\u6cd5\uff0c\u5b83\u5c06\u5217\u8868\u5206\u6210\u8f83\u5c0f\u7684\u5b50\u5217\u8868\uff0c\u5206\u522b\u6392\u5e8f\u540e\u518d\u5408\u5e76\u3002<\/p>\n<\/p>\n
def merge_sort(arr):<\/p>\n
    if len(arr) <= 1:<\/p>\n
        return arr<\/p>\n
    mid = len(arr) \/\/ 2<\/p>\n
    left = merge_sort(arr[:mid])<\/p>\n
    right = merge_sort(arr[mid:])<\/p>\n
    return merge(left, right)<\/p>\n
def merge(left, right):<\/p>\n
    result = []<\/p>\n
    i = j = 0<\/p>\n
    while i < len(left) and j < len(right):<\/p>\n
        if left[i] < right[j]:<\/p>\n
            result.append(left[i])<\/p>\n
            i += 1<\/p>\n
        else:<\/p>\n
            result.append(right[j])<\/p>\n
            j += 1<\/p>\n
    result.extend(left[i:])<\/p>\n
    result.extend(right[j:])<\/p>\n
    return result<\/p>\n
numbers = [5, 2, 9, 1, 5, 6]<\/p>\n
sorted_numbers = merge_sort(numbers)<\/p>\n
print(sorted_numbers)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa [1, 2, 5, 5, 6, 9]<\/code>\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5b9e\u9645\u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n
1\u3001\u5904\u7406\u5927\u6570\u636e\u96c6<\/h4>\n<\/p>\n
\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\uff0c\u9009\u62e9\u5408\u9002\u7684\u6392\u5e8f\u7b97\u6cd5\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u5feb\u901f\u6392\u5e8f\u5728\u5e73\u5747\u60c5\u51b5\u4e0b\u5177\u6709 O(n log n) \u7684\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u975e\u5e38\u9002\u5408\u5927\u6570\u636e\u96c6\u3002<\/p>\n<\/p>\n
import random<\/p>\n
large_list = [random.randint(0, 10000) for _ in range(1000000)]<\/p>\n
sorted_large_list = quick_sort(large_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u6392\u5e8f\u5bf9\u8c61\u5217\u8868<\/h4>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u5bf9\u5bf9\u8c61\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u3002\u4f8b\u5982\uff0c\u6309\u7167\u5458\u5de5\u7684\u5e74\u9f84\u3001\u5de5\u8d44\u7b49\u5c5e\u6027\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<\/p>\n
employees = [{'name': 'John', 'age': 30, 'salary': 5000},<\/p>\n
             {'name': 'Alice', 'age': 25, 'salary': 6000},<\/p>\n
             {'name': 'Bob', 'age': 35, 'salary': 7000}]<\/p>\n
\u6309\u5e74\u9f84\u6392\u5e8f<\/strong><\/h2>\n
sorted_by_age = sorted(employees, key=lambda e: e['age'])<\/p>\n
print(sorted_by_age)<\/p>\n
\u6309\u5de5\u8d44\u6392\u5e8f<\/strong><\/h2>\n
sorted_by_salary = sorted(employees, key=lambda e: e['salary'], reverse=True)<\/p>\n
print(sorted_by_salary)<\/p>\n
<\/code><\/pre>\n<\/p>\n
3\u3001\u7ed3\u5408\u5176\u4ed6\u6570\u636e\u5904\u7406\u6d41\u7a0b<\/h4>\n<\/p>\n
\u6392\u5e8f\u901a\u5e38\u662f\u6570\u636e\u5904\u7406\u6d41\u7a0b\u7684\u4e00\u90e8\u5206\u3002\u4f8b\u5982\uff0c\u5728\u6570\u636e\u6e05\u6d17\u3001\u5206\u6790\u548c\u53ef\u89c6\u5316\u4e4b\u524d\uff0c\u53ef\u80fd\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
data = {'Name': ['John', 'Alice', 'Bob'], 'Age': [30, 25, 35], 'Salary': [5000, 6000, 7000]}<\/p>\n
df = pd.DataFrame(data)<\/p>\n
\u6309\u5e74\u9f84\u6392\u5e8f<\/strong><\/h2>\n
df_sorted_by_age = df.sort_values(by='Age')<\/p>\n
print(df_sorted_by_age)<\/p>\n
\u6309\u5de5\u8d44\u6392\u5e8f<\/strong><\/h2>\n
df_sorted_by_salary = df.sort_values(by='Salary', ascending=False)<\/p>\n
print(df_sorted_by_salary)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
Python \u63d0\u4f9b\u4e86\u591a\u79cd\u5bf9\u6570\u503c\u8fdb\u884c\u5927\u5c0f\u6392\u5e8f\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u5185\u7f6e\u51fd\u6570 sorted()\u3001list.sort() \u65b9\u6cd5\uff0c\u4ee5\u53ca\u9ad8\u7ea7\u6392\u5e8f\u7b97\u6cd5\u5982\u5feb\u901f\u6392\u5e8f\u548c\u5f52\u5e76\u6392\u5e8f\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5728\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u548c\u573a\u666f\u65f6\uff0c\u90fd\u6709\u5404\u81ea\u7684\u4f18\u52bf\u3002\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u4f60\u5e94\u8be5\u80fd\u591f\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u6392\u5e8f\u65b9\u6cd5\uff0c\u63d0\u9ad8\u6570\u636e\u5904\u7406\u6548\u7387\u3002<\/p>\n<\/p>\n
\u65e0\u8bba\u662f\u5904\u7406\u7b80\u5355\u7684\u6570\u503c\u5217\u8868\uff0c\u8fd8\u662f\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\uff0cPython \u90fd\u80fd\u63d0\u4f9b\u5f3a\u5927\u7684\u5de5\u5177\u548c\u65b9\u6cd5\u6765\u6ee1\u8db3\u4f60\u7684\u9700\u6c42\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u7406\u89e3\u548c\u5e94\u7528 Python \u7684\u6392\u5e8f\u65b9\u6cd5\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5bf9\u6570\u5b57\u5217\u8868\u8fdb\u884c\u6392\u5e8f\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684sorted()<\/code>\u51fd\u6570\u6216\u5217\u8868\u7684sort()<\/code>\u65b9\u6cd5\u5bf9\u6570\u5b57\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u3002sorted()<\/code>\u51fd\u6570\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u6392\u5e8f\u540e\u7684\u5217\u8868\uff0c\u800csort()<\/code>\u65b9\u6cd5\u5219\u4f1a\u5bf9\u539f\u5217\u8868\u8fdb\u884c\u539f\u5730\u6392\u5e8f\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
numbers = [5, 2, 9, 1, 5, 6]\nsorted_numbers = sorted(numbers)  # \u8fd4\u56de\u4e00\u4e2a\u65b0\u5217\u8868\nnumbers.sort()  # \u539f\u5730\u6392\u5e8f\n<\/code><\/pre>\n
\u5728Python\u4e2d\u5982\u4f55\u5b9e\u73b0\u9006\u5e8f\u6392\u5e8f\uff1f<\/strong>
\u8981\u5bf9\u6570\u5b57\u8fdb\u884c\u9006\u5e8f\u6392\u5e8f\uff0c\u53ef\u4ee5\u5728\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u65f6\u8bbe\u7f6ereverse=True<\/code>\u53c2\u6570\uff0c\u6216\u8005\u5728sort()<\/code>\u65b9\u6cd5\u4e2d\u4f7f\u7528\u540c\u6837\u7684\u53c2\u6570\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
numbers = [5, 2, 9, 1, 5, 6]\nsorted_numbers_desc = sorted(numbers, reverse=True)  # \u8fd4\u56de\u4e00\u4e2a\u9006\u5e8f\u7684\u65b0\u5217\u8868\nnumbers.sort(reverse=True)  # \u539f\u5730\u9006\u5e8f\u6392\u5e8f\n<\/code><\/pre>\n
Python\u4e2d\u6392\u5e8f\u65f6\u5982\u4f55\u5904\u7406\u91cd\u590d\u6570\u5b57\uff1f<\/strong>
\u5728Python\u7684\u6392\u5e8f\u529f\u80fd\u4e2d\uff0c\u91cd\u590d\u7684\u6570\u5b57\u4f1a\u88ab\u4fdd\u7559\uff0c\u5e76\u6309\u7167\u51fa\u73b0\u7684\u987a\u5e8f\u8fdb\u884c\u6392\u5e8f\u3002\u65e0\u8bba\u662f\u4f7f\u7528sorted()<\/code>\u51fd\u6570\u8fd8\u662fsort()<\/code>\u65b9\u6cd5\uff0c\u91cd\u590d\u7684\u6570\u5b57\u90fd\u4f1a\u6309\u7167\u5b83\u4eec\u5728\u5217\u8868\u4e2d\u7684\u76f8\u5bf9\u4f4d\u7f6e\u8fdb\u884c\u5904\u7406\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
numbers = [5, 2, 9, 1, 5, 6]\nsorted_numbers = sorted(numbers)  # [1, 2, 5, 5, 6, 9]\n<\/code><\/pre>\n
\u8fd9\u6837\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u6392\u5e8f\u5305\u542b\u91cd\u590d\u6570\u5b57\u7684\u5217\u8868\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u5bf9\u6570\u503c\u8fdb\u884c\u5927\u5c0f\u6392\u5e8f\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u51fd\u6570sorted()\u3001list.sort()\u65b9\u6cd5\u3001\u4ee5\u53ca\u5176\u4ed6\u9ad8\u7ea7 […]","protected":false},"author":3,"featured_media":1046264,"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\/1046250"}],"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=1046250"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1046250\/revisions"}],"predecessor-version":[{"id":1046265,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1046250\/revisions\/1046265"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1046264"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1046250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1046250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1046250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}