🪞 生成对称整数（回文数）Generate Symmetric Integers
生成回文整数：指定位数与个数，可设种子。本地处理。可设置「个数」、「位数」、「种子（留空 = 真随机）」。Generate palindromic integers of a chosen digit length and count; optional seed. Processed locally. Settings: How many, Digits, Seed (blank = truly random).
使用说明与常见问题How-to & FAQ
「生成对称整数（回文数）」是什么？What is the Generate Symmetric Integers tool?
生成回文整数：指定位数与个数，可设种子。本地处理。可设置「个数」、「位数」、「种子（留空 = 真随机）」。Generate palindromic integers of a chosen digit length and count; optional seed. Processed locally. Settings: How many, Digits, Seed (blank = truly random).
如何使用「生成对称整数（回文数）」？How do I use the Generate Symmetric Integers tool?
在「生成对称整数（回文数）」中，按需设置「个数」、「位数」、「种子（留空 = 真随机）」，结果会实时显示在下方，点击「复制结果」即可复制。Set "How many" palindromic integers you want and how many "Digits" each has; leave "Seed" blank for a fresh random list, or enter any value to get the same list again. Click "Copy result" to copy it.
什么是对称整数？What is a symmetric integer?
正着读和倒着读相同的数，例如 121、3443。A number that reads the same forwards and backwards, such as 121 or 3443.
36 位的数也准确吗？Are 36-digit results exact?
准确。数字是一位一位按文字生成再镜像的（逐位处理），不经过浮点，所以 36 位也是真正的回文。首位不会是 0；随机抽取可能出现重复的数。Yes. Digits are generated one by one as text and mirrored, with no floating-point step (processed as text), so even 36-digit results are true palindromes. The first digit is never 0; random draws can repeat a value.
输入和输出是什么样的？What does the input and output look like?
例如在「生成对称整数（回文数）」中把「个数」设为 3，「位数」设为 3，「种子（留空 = 真随机）」设为 1，输出为：454 ⏎ 989 ⏎ 939（⏎ 表示换行）。For example, in the Generate Symmetric Integers with "How many" set to 3, "Digits" set to 3, "Seed (blank = truly random)" set to 1, the output is: 454 ⏎ 989 ⏎ 939 (⏎ marks a line break).
有哪些选项可以调整？What options can I adjust?
「生成对称整数（回文数）」的设置：「个数」默认 10；「位数」默认 3；「种子（留空 = 真随机）」可留空。改动任一选项后结果会按新设置重新生成。Settings in the Generate Symmetric Integers — "How many" default 10; "Digits" default 3; "Seed (blank = truly random)" optional. Changing any option regenerates the result with the new setting.
「生成对称整数（回文数）」免费吗？需要注册吗？Is the Generate Symmetric Integers free? Do I need an account?
「生成对称整数（回文数）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Generate Symmetric Integers is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.