Σ 计算数字列表之和Calculate Number Sum

使用说明与常见问题How-to & FAQ

「计算数字列表之和」是什么？What is the Calculate Number Sum tool?

计算一列整数的和。本地处理。Sum of a list of integers. Processed locally.

如何使用「计算数字列表之和」？How do I use the Calculate Number Sum tool?

在「计算数字列表之和」中，把内容粘贴或输入到上方输入框，结果会实时显示在下方，点击「复制结果」即可复制。例如输入「1 2 3」，得到「6」。In the Calculate Number Sum: Paste or type into the input box; the result appears below instantly — click "Copy result" to copy it. Example: "1 2 3" → "6".

结果精确吗？Is the result exact?

精确。每个整数都按大整数（BigInt）读入并相加，不经过浮点，所以 9007199254740992 + 1 会正确得到 9007199254740993，几十位的整数也不会丢位。Yes. Every integer is read as a big integer (BigInt) and added with no floating point, so 9007199254740992 + 1 correctly gives 9007199254740993, and integers with dozens of digits keep every digit.

能输入小数吗？Can I enter decimals?

不能，本工具只接受整数。小数、1e3 这类写法会指出是第几项不是整数，而不是悄悄取整。数之间可用空格、换行、逗号或分号分隔。No, this tool accepts integers only. Decimals or forms like 1e3 get a message naming the item that is not an integer, instead of being silently rounded. Separate the numbers with spaces, line breaks, commas or semicolons.

1,000 会被当成一千吗？Is 1,000 read as one thousand?

不会。逗号是分隔符，所以「1,000 2」按 1、000、2 三个数计算，结果是 3。要输入一千请写 1000，不要加千位分隔符；输入里有被逗号拆开的数时（例如 1,000 或 1,5），页面会提示它被读成了哪几个数。No. The comma is a separator, so '1,000 2' is read as the three numbers 1, 000 and 2, giving 3. Write one thousand as 1000 without a thousands separator; the page shows a note naming any number a comma split (for example "1,000 was read as 1 and 000", or "1,5 was read as 1 and 5").

输入和输出是什么样的？What does the input and output look like?

例如在「计算数字列表之和」中输入 1 2 3，输出为：6。For example, the Calculate Number Sum turns the input 1 2 3 into: 6.

「计算数字列表之和」免费吗？需要注册吗？Is the Calculate Number Sum free? Do I need an account?

「计算数字列表之和」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 Calculate Number Sum is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.