🎲 生成随机矩阵Generate Random Matrix
生成随机整数矩阵：可设行列、数值范围与种子。本地处理。可设置「行数」、「列数」、「下限」、「上限」、「种子（可选）」。Generate a random integer matrix: set rows, columns, value range and seed. Processed locally. Settings: Rows, Columns, Min, Max, Seed (optional).
使用说明与常见问题How-to & FAQ
「生成随机矩阵」是什么？What is the Generate Random Matrix tool?
生成随机整数矩阵：可设行列、数值范围与种子。本地处理。可设置「行数」、「列数」、「下限」、「上限」、「种子（可选）」。Generate a random integer matrix: set rows, columns, value range and seed. Processed locally. Settings: Rows, Columns, Min, Max, Seed (optional).
如何使用「生成随机矩阵」？How do I use the Generate Random Matrix tool?
在「生成随机矩阵」中，按需设置「行数」、「列数」、「下限」、「上限」、「种子（可选）」，结果会实时显示在下方，点击「复制结果」即可复制。In the Generate Random Matrix: Adjust "Rows", "Columns", "Min", "Max", "Seed (optional)"; the result appears below instantly — click "Copy result" to copy it.
种子有何用？What does Seed do?
同一种子会得到同一矩阵，便于复现。留空则每次真正随机。The same seed reproduces the same matrix. Leave blank for fresh randomness.
输入和输出是什么样的？What does the input and output look like?
例如在「生成随机矩阵」中把「行数」设为 2，「列数」设为 3，「下限」设为 1，「上限」设为 9，「种子（可选）」设为 1，输出为两行：8 2 8 和 7 6 9。同一种子和设置每次都得到相同的矩阵；留空种子则每次随机。For example, in the Generate Random Matrix with "Rows" set to 2, "Columns" set to 3, "Min" set to 1, "Max" set to 9 and "Seed (optional)" set to 1, the output is two rows: 8 2 8 and 7 6 9. The same seed and settings always give the same matrix; leave the seed empty for a fresh random matrix each time.
有哪些选项可以调整？What options can I adjust?
「生成随机矩阵」的设置：「行数」默认 3；「列数」默认 3；「下限」默认 0；「上限」默认 9；「种子（可选）」默认 1；「分隔」可选 空格、逗号（默认 空格）。每次生成结果都按当前设置处理。Settings in the Generate Random Matrix — "Rows" default 3; "Columns" default 3; "Min" default 0; "Max" default 9; "Seed (optional)" default 1; "Separator": Spaces, Commas (default Spaces). The result always uses the current settings.
计算精度如何？How precise are the results?
「生成随机矩阵」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The Generate Random Matrix uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「生成随机矩阵」免费吗？需要注册吗？Is the Generate Random Matrix free? Do I need an account?
「生成随机矩阵」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 Random Matrix is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.