🔀 替换整数中的数字Replace Integer Digits

使用说明与常见问题How-to & FAQ

「替换整数中的数字」是什么？What is the Replace Integer Digits tool?

把每个整数里的指定数字替换成另一个（例如把所有 0 换成 9），保留符号。本地处理。Replace one digit with another in each integer (e.g. turn every 0 into 9), keeping the sign. Processed locally.

如何使用「替换整数中的数字」？How do I use the Replace Integer Digits tool?

在「替换整数中的数字」中，把内容粘贴或输入到上方输入框，按需设置「从数字」、「到数字」，结果会实时显示在下方，点击「复制结果」即可复制。Paste integers and set "From digit" and "To digit"; every occurrence of the first digit is replaced by the second (with 0 to 9, 2000 becomes 2999) and the sign is kept. Click "Copy result" to copy the output.

怎样输入多个整数？How do I enter several integers?

每行一个，或用空格、逗号、分号分隔。像 1,234,567 这样每 3 位一个逗号的写法按千位分隔读作一个数（所以 10,100 是 10100，要表示两个数请写 10 100）；也可以用下划线分组（1_000）。负号可用 -、−（U+2212）或全角 －，全角数字也能识别。小数、科学计数法（1e3）或夹杂文字会报错并指出是第几个、完整显示那个值。One per line, or separated by spaces, commas or semicolons. A value with a comma every three digits, like 1,234,567, is read as one number with thousands separators (so 10,100 is 10100; write 10 100 for two values); underscores also group digits (1_000). Minus can be a hyphen, the Unicode minus (U+2212) or the fullwidth minus, and fullwidth digits work. Decimals, scientific notation (1e3) or stray text give an error naming the position and showing the whole value.

结果精确吗？Are the results exact?

精确。所有整数都按大整数（BigInt）逐位处理，不经过浮点，超过 2^53 的数（例如 9007199254740993）也不会被舍入。粘贴几千上万行也是线性处理，通常在几十毫秒内完成。Yes. Every value is handled as a big integer (BigInt) with no floating-point step, so numbers above 2^53 such as 9007199254740993 are never rounded. Pasting thousands of lines is processed in linear time, usually within tens of milliseconds.

结果里会有前导零吗？Can the result have leading zeros?

不会。替换后按整数输出：10 把 1 换成 0 得到 0（不是 00），-1 把 1 换成 0 得到 0（不写 -0）。输入里的分隔符（空格、逗号、换行）原样保留。No. The result is written as an integer: in 10, replacing 1 with 0 gives 0 (not 00), and -1 gives 0 (not -0). Separators in the input (spaces, commas, line breaks) are kept as they are.

「替换整数中的数字」免费吗？需要注册吗？Is the Replace Integer Digits free? Do I need an account?

「替换整数中的数字」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 Replace Integer Digits is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.