{"id":984643,"date":"2024-12-27T07:29:59","date_gmt":"2024-12-26T23:29:59","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/984643.html"},"modified":"2024-12-27T07:30:03","modified_gmt":"2024-12-26T23:30:03","slug":"python%e5%a6%82%e4%bd%95%e9%80%86%e5%ba%8f%e6%95%b0%e8%ae%a1%e7%ae%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/984643.html","title":{"rendered":"python\u5982\u4f55\u9006\u5e8f\u6570\u8ba1\u7b97"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24212155\/2b888f9f-6b22-4821-b9ca-7f750943333c.webp\" alt=\"python\u5982\u4f55\u9006\u5e8f\u6570\u8ba1\u7b97\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u9006\u5e8f\u6570\u8ba1\u7b97\u53ef\u4ee5\u901a\u8fc7\u5c06\u6570\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3001\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u8fdb\u884c\u9006\u5e8f\u3001\u5c06\u9006\u5e8f\u5b57\u7b26\u4e32\u8f6c\u6362\u56de\u6574\u6570\u3001\u4f7f\u7528\u9012\u5f52\u65b9\u6cd5\u6216\u5faa\u73af\u6765\u5b9e\u73b0\u3002<\/strong>\u8fd9\u51e0\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5\u6709\u6548\u5730\u5bf9\u6574\u6570\u8fdb\u884c\u9006\u5e8f\u5904\u7406\u3002\u4f7f\u7528\u5b57\u7b26\u4e32\u64cd\u4f5c\u662f\u6700\u76f4\u89c2\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5c06\u6574\u6570\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4f7f\u7528\u5207\u7247\u6765\u9006\u5e8f\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u518d\u8f6c\u6362\u56de\u6574\u6570\u3002\u9012\u5f52\u548c\u5faa\u73af\u65b9\u6cd5\u5219\u63d0\u4f9b\u4e86\u4e00\u79cd\u6570\u5b66\u4e0a\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u4e0d\u4f9d\u8d56\u4e8e\u5b57\u7b26\u4e32\u64cd\u4f5c\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u9006\u5e8f\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u5b57\u7b26\u4e32\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\u662f\u9006\u5e8f\u6570\u8ba1\u7b97\u7684\u6700\u7b80\u5355\u548c\u76f4\u89c2\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002<\/p>\n<\/p>\n<p><h4>1. \u4f7f\u7528\u5b57\u7b26\u4e32\u5207\u7247<\/h4>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u9006\u5e8f\u5b57\u7b26\u4e32\uff0c\u6700\u540e\u5c06\u5176\u8f6c\u6362\u56de\u6574\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n):<\/p>\n<p>    reversed_str = str(n)[::-1]<\/p>\n<p>    return int(reversed_str)<\/p>\n<p>number = 12345<\/p>\n<p>print(reverse_number(number))  # \u8f93\u51fa: 54321<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u5229\u7528\u4e86Python\u5b57\u7b26\u4e32\u7684\u5207\u7247\u7279\u6027\uff0c\u901a\u8fc7<code>[::-1]<\/code>\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5b57\u7b26\u4e32\u7684\u9006\u5e8f\u3002<\/p>\n<\/p>\n<p><h4>2. \u4f7f\u7528\u5185\u7f6e\u51fd\u6570<code>reversed()<\/code><\/h4>\n<\/p>\n<p><p><code>reversed()<\/code>\u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u4efb\u4f55\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3002\u5c06\u5b57\u7b26\u4e32\u53cd\u8f6c\u540e\uff0c\u4f7f\u7528<code>join()<\/code>\u65b9\u6cd5\u8fde\u63a5\u6210\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\uff0c\u518d\u8f6c\u6362\u4e3a\u6574\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n):<\/p>\n<p>    reversed_str = &#39;&#39;.join(reversed(str(n)))<\/p>\n<p>    return int(reversed_str)<\/p>\n<p>number = 12345<\/p>\n<p>print(reverse_number(number))  # \u8f93\u51fa: 54321<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u6570\u5b66\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u6570\u5b66\u65b9\u6cd5\u4e0d\u4f9d\u8d56\u4e8e\u5b57\u7b26\u4e32\u8f6c\u6362\uff0c\u662f\u901a\u8fc7\u5bf9\u6570\u5b57\u672c\u8eab\u8fdb\u884c\u64cd\u4f5c\u6765\u5b9e\u73b0\u9006\u5e8f\u3002<\/p>\n<\/p>\n<p><h4>1. \u4f7f\u7528\u5faa\u73af<\/h4>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0d\u65ad\u53d6\u6a21\u548c\u6574\u9664\u64cd\u4f5c\uff0c\u53ef\u4ee5\u9010\u4f4d\u63d0\u53d6\u548c\u6784\u5efa\u9006\u5e8f\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n):<\/p>\n<p>    reversed_number = 0<\/p>\n<p>    while n &gt; 0:<\/p>\n<p>        reversed_number = reversed_number * 10 + n % 10<\/p>\n<p>        n = n \/\/ 10<\/p>\n<p>    return reversed_number<\/p>\n<p>number = 12345<\/p>\n<p>print(reverse_number(number))  # \u8f93\u51fa: 54321<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u4e0d\u4f1a\u6d89\u53ca\u5230\u5b57\u7b26\u4e32\u8f6c\u6362\uff0c\u76f4\u63a5\u5bf9\u6574\u6570\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><h4>2. \u4f7f\u7528\u9012\u5f52<\/h4>\n<\/p>\n<p><p>\u9012\u5f52\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u4e3a\u62bd\u8c61\u7684\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n, reversed_number=0):<\/p>\n<p>    if n == 0:<\/p>\n<p>        return reversed_number<\/p>\n<p>    else:<\/p>\n<p>        return reverse_number(n \/\/ 10, reversed_number * 10 + n % 10)<\/p>\n<p>number = 12345<\/p>\n<p>print(reverse_number(number))  # \u8f93\u51fa: 54321<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u9012\u5f52\u65b9\u6cd5\u901a\u8fc7\u4e0d\u65ad\u8c03\u7528\u81ea\u8eab\u5b9e\u73b0\u9010\u6b65\u6784\u5efa\u9006\u5e8f\u6570\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u5e94\u7528\u573a\u666f\u4e0e\u6027\u80fd\u6bd4\u8f83<\/h3>\n<\/p>\n<p><h4>1. \u5e94\u7528\u573a\u666f<\/h4>\n<\/p>\n<p><p>\u9006\u5e8f\u6570\u8ba1\u7b97\u5728\u8bb8\u591a\u8ba1\u7b97\u673a\u79d1\u5b66\u95ee\u9898\u4e2d\u90fd\u6709\u5e94\u7528\uff0c\u4f8b\u5982\u5728\u6570\u5b57\u5904\u7406\u3001\u6570\u636e\u52a0\u5bc6\u4ee5\u53ca\u7b97\u6cd5\u9898\u76ee\u4e2d\u3002\u9009\u62e9\u4f55\u79cd\u65b9\u6cd5\u901a\u5e38\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u9700\u6c42\u548c\u4e2a\u4eba\u7684\u7f16\u7a0b\u4e60\u60ef\u3002<\/p>\n<\/p>\n<p><h4>2. \u6027\u80fd\u6bd4\u8f83<\/h4>\n<\/p>\n<p><p>\u5728\u6027\u80fd\u65b9\u9762\uff0c\u5b57\u7b26\u4e32\u65b9\u6cd5\u901a\u5e38\u5728\u5c0f\u8303\u56f4\u6570\u5b57\u4e0a\u8868\u73b0\u826f\u597d\uff0c\u56e0\u5176\u7b80\u5355\u548c\u6613\u4e8e\u7406\u89e3\u3002\u800c\u6570\u5b66\u65b9\u6cd5\u5728\u5904\u7406\u5927\u6570\u65f6\u53ef\u80fd\u66f4\u5177\u6548\u7387\uff0c\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u5b57\u7b26\u4e32\u8f6c\u6362\u7684\u989d\u5916\u5f00\u9500\u3002\u9012\u5f52\u65b9\u6cd5\u7531\u4e8e\u5176\u51fd\u6570\u8c03\u7528\u7684\u5f00\u9500\uff0c\u53ef\u80fd\u5728\u6df1\u5ea6\u8f83\u5927\u65f6\u8868\u73b0\u4e0d\u4f73\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u9519\u8bef\u5904\u7406\u4e0e\u8fb9\u754c\u60c5\u51b5<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u9006\u5e8f\u6570\u8ba1\u7b97\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4e00\u4e9b\u8fb9\u754c\u60c5\u51b5\u548c\u6f5c\u5728\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h4>1. \u8d1f\u6570\u5904\u7406<\/h4>\n<\/p>\n<p><p>\u5bf9\u4e8e\u8d1f\u6570\uff0c\u9700\u8981\u7279\u522b\u5904\u7406\u7b26\u53f7\u4f4d\u3002\u53ef\u4ee5\u5728\u9006\u5e8f\u64cd\u4f5c\u524d\u540e\u5904\u7406\u8d1f\u53f7\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n):<\/p>\n<p>    sign = -1 if n &lt; 0 else 1<\/p>\n<p>    n *= sign<\/p>\n<p>    reversed_number = 0<\/p>\n<p>    while n &gt; 0:<\/p>\n<p>        reversed_number = reversed_number * 10 + n % 10<\/p>\n<p>        n = n \/\/ 10<\/p>\n<p>    return sign * reversed_number<\/p>\n<p>number = -12345<\/p>\n<p>print(reverse_number(number))  # \u8f93\u51fa: -54321<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u8fb9\u754c\u60c5\u51b5<\/h4>\n<\/p>\n<p><p>\u5904\u7406\u6570\u5b57\u4e3a0\u7684\u60c5\u51b5\uff0c\u4ee5\u53ca\u975e\u5e38\u5927\u7684\u6570\u5b57\u53ef\u80fd\u5bfc\u81f4\u6ea2\u51fa\u7684\u95ee\u9898\u3002\u5728Python\u4e2d\uff0c\u6574\u6570\u53ef\u4ee5\u662f\u4efb\u610f\u7cbe\u5ea6\u7684\uff0c\u56e0\u6b64\u901a\u5e38\u4e0d\u9700\u8981\u62c5\u5fc3\u6ea2\u51fa\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n):<\/p>\n<p>    if n == 0:<\/p>\n<p>        return 0<\/p>\n<p>    # \u5176\u4ed6\u5904\u7406\u903b\u8f91<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u5176\u4ed6\u5b9e\u73b0\u65b9\u5f0f<\/h3>\n<\/p>\n<p><h4>1. \u4f7f\u7528\u6808<\/h4>\n<\/p>\n<p><p>\u53ef\u4ee5\u4f7f\u7528\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u6808\u6765\u5b9e\u73b0\u6570\u5b57\u7684\u9006\u5e8f\u3002\u5c06\u6570\u5b57\u7684\u6bcf\u4e00\u4f4d\u538b\u5165\u6808\u4e2d\uff0c\u7136\u540e\u4f9d\u6b21\u5f39\u51fa\u6784\u5efa\u9006\u5e8f\u6570\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def reverse_number(n):<\/p>\n<p>    stack = []<\/p>\n<p>    while n &gt; 0:<\/p>\n<p>        stack.append(n % 10)<\/p>\n<p>        n = n \/\/ 10<\/p>\n<p>    reversed_number = 0<\/p>\n<p>    place = 1<\/p>\n<p>    while stack:<\/p>\n<p>        reversed_number += stack.pop() * place<\/p>\n<p>        place *= 10<\/p>\n<p>    return reversed_number<\/p>\n<p>number = 12345<\/p>\n<p>print(reverse_number(number))  # \u8f93\u51fa: 54321<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2. \u4f7f\u7528\u961f\u5217<\/h4>\n<\/p>\n<p><p>\u7c7b\u4f3c\u4e8e\u6808\uff0c\u53ef\u4ee5\u4f7f\u7528\u961f\u5217\u6765\u5b9e\u73b0\u9006\u5e8f\uff0c\u4f46\u8fd9\u5728\u9006\u5e8f\u64cd\u4f5c\u4e2d\u5e76\u4e0d\u5e38\u7528\uff0c\u56e0\u4e3a\u961f\u5217\u901a\u5e38\u7528\u4e8e\u5148\u8fdb\u5148\u51fa\uff08FIFO\uff09\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u591a\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u7075\u6d3b\u9009\u62e9\u9002\u5408\u7684\u9006\u5e8f\u6570\u8ba1\u7b97\u65b9\u5f0f\u3002\u65e0\u8bba\u662f\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u5207\u7247\uff0c\u8fd8\u662f\u66f4\u4e3a\u590d\u6742\u7684\u9012\u5f52\u548c\u5faa\u73af\u65b9\u6cd5\uff0c\u6bcf\u79cd\u90fd\u6709\u5176\u72ec\u7279\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u5408\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u6570\u5b57\u7684\u9006\u5e8f\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u4f7f\u7528\u5207\u7247\u65b9\u6cd5\u8fdb\u884c\u9006\u5e8f\uff0c\u6700\u540e\u518d\u5c06\u5176\u8f6c\u6362\u56de\u6574\u6570\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5b9e\u73b0\uff1a  <\/p>\n<pre><code class=\"language-python\">num = 12345\nreversed_num = int(str(num)[::-1])\nprint(reversed_num)  # \u8f93\u51fa54321\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u4e14\u6613\u4e8e\u7406\u89e3\uff0c\u9002\u5408\u521d\u5b66\u8005\u4f7f\u7528\u3002<\/p>\n<p><strong>Python\u4e2d\u662f\u5426\u6709\u5185\u7f6e\u51fd\u6570\u53ef\u4ee5\u76f4\u63a5\u9006\u5e8f\u6570\u5b57\uff1f<\/strong><br \/>Python\u6807\u51c6\u5e93\u5e76\u6ca1\u6709\u4e13\u95e8\u7684\u5185\u7f6e\u51fd\u6570\u6765\u9006\u5e8f\u6570\u5b57\uff0c\u4f46\u53ef\u4ee5\u5229\u7528\u5176\u4ed6\u529f\u80fd\u5b9e\u73b0\u76f8\u540c\u7684\u6548\u679c\u3002\u901a\u8fc7\u7ed3\u5408\u5b57\u7b26\u4e32\u548c\u6574\u6570\u7684\u8f6c\u6362\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6570\u5b57\u7684\u9006\u5e8f\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u5217\u8868\u7684reverse()\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u5904\u7406\u6570\u5b57\u7684\u9006\u5e8f\uff0c\u4f46\u9700\u8981\u5148\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5217\u8868\u3002<\/p>\n<p><strong>\u5982\u4f55\u5904\u7406\u8d1f\u6570\u6216\u5e26\u5c0f\u6570\u7684\u9006\u5e8f\uff1f<\/strong><br \/>\u5904\u7406\u8d1f\u6570\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\u7b26\u53f7\u4f4d\u7f6e\u3002\u53ef\u4ee5\u5148\u5c06\u8d1f\u53f7\u63d0\u53d6\u51fa\u6765\uff0c\u518d\u5bf9\u7edd\u5bf9\u503c\u8fdb\u884c\u9006\u5e8f\uff0c\u4f8b\u5982\uff1a  <\/p>\n<pre><code class=\"language-python\">num = -12345\nif num &lt; 0:\n    reversed_num = -int(str(-num)[::-1])\nelse:\n    reversed_num = int(str(num)[::-1])\nprint(reversed_num)  # \u8f93\u51fa-54321\n<\/code><\/pre>\n<p>\u5bf9\u4e8e\u5c0f\u6570\uff0c\u53ef\u4ee5\u5c06\u5176\u5206\u4e3a\u6574\u6570\u90e8\u5206\u548c\u5c0f\u6570\u90e8\u5206\uff0c\u5206\u522b\u9006\u5e8f\u540e\u518d\u7ec4\u5408\u8d77\u6765\u3002\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u9006\u5e8f\u540e\u6570\u5b57\u7684\u6b63\u786e\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u9006\u5e8f\u6570\u8ba1\u7b97\u53ef\u4ee5\u901a\u8fc7\u5c06\u6570\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3001\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u8fdb\u884c\u9006\u5e8f\u3001\u5c06\u9006\u5e8f\u5b57\u7b26\u4e32\u8f6c\u6362\u56de\u6574\u6570\u3001\u4f7f\u7528\u9012\u5f52\u65b9 [&hellip;]","protected":false},"author":3,"featured_media":984652,"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\/984643"}],"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=984643"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/984643\/revisions"}],"predecessor-version":[{"id":984654,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/984643\/revisions\/984654"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/984652"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=984643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=984643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=984643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}