Question

我需要一个正则表达式来判断字符串是否采用以下格式。数字组必须以逗号分隔。可以包含由 -

分隔的一系列数字

 300, 200-400, 1, 250-300

这些组可以按任何顺序排列。

这是我到目前为止所做的，但它不匹配整个字符串。它只匹配数字组。

([0-9]{1,3}-?){1,2},?

Answer 1

试试这个：

^(?:\d{1,3}(?:-\d{1,3})?)(?:,\s*\d{1,3}(?:-\d{1,3})?|$)+

由于您未指定数字范围，我将此留给您。无论如何你应该用正则表达式做数学：）

说明：

"
^                       # Assert position at the beginning of the string
(?:                     # Match the regular expression below
   \\d                  # Match a single digit 0..9
      {1,3}             # Between one and 3 times, as many times as possible, giving back as needed (greedy)
   (?:                  # Match the regular expression below
      -                 # Match the character “-” literally
      \\d               # Match a single digit 0..9
         {1,3}          # Between one and 3 times, as many times as possible, giving back as needed (greedy)
   )?                   # Between zero and one times, as many times as possible, giving back as needed (greedy)
)
(?:                     # Match the regular expression below
                        # Match either the regular expression below (attempting the next alternative only if this one fails)
      ,                 # Match the character “,” literally
      \\s               # Match a single character that is a “whitespace character” (spaces, tabs, and line breaks)
         *              # Between zero and unlimited times, as many times as possible, giving back as needed (greedy)
      \\d               # Match a single digit 0..9
         {1,3}          # Between one and 3 times, as many times as possible, giving back as needed (greedy)
      (?:               # Match the regular expression below
         -              # Match the character “-” literally
         \\d            # Match a single digit 0..9
            {1,3}       # Between one and 3 times, as many times as possible, giving back as needed (greedy)
      )?                # Between zero and one times, as many times as possible, giving back as needed (greedy)
   |                    # Or match regular expression number 2 below (the entire group fails if this one fails to match)
      \$                # Assert position at the end of the string (or before the line break at the end of the string, if any)
)+                      # Between one and unlimited times, as many times as possible, giving back as needed (greedy)
"

<强> Test samples

Answer 2

^(\d+(-\d+)?)(,\s*(\d+(-\d+)?))*$

Answer 3

这应该有效：

/^([0-9]{1,3}(-[0-9]{1,3})?)(,\s?([0-9]{1,3}(-[0-9]{1,3})?))*$/

Answer 4

你需要重复一遍：

(?:([0-9]{1,3}-?){1,2},?)+

要确保数字正确，即您不匹配010之类的数字，您可能需要稍微更改正则表达式。我还更改了正则表达式的范围部分，因此您不匹配100-200-但只有100或100-200之类的内容，并且在逗号后添加了对空格的支持（可选）：

(?:(([1-9]{1}[0-9]{0,2})(-[1-9]{1}[0-9]{0,2})?){1,2},?\s*)+

此外，根据您要捕获的内容，您可能希望将捕获括号()更改为非捕获括号(?:)

<强>更新

基于最新评论的修订版：

^\s*(?:(([1-9][0-9]{0,2})(-[1-9][0-9]{0,2})?)(?:,\s*|$))+$

Answer 5

([0-9-]+),\s([0-9-]+),\s([0-9-]+),\s([0-9-]+)

Answer 6

试试这个正则表达式

^(([0-9]{1,3}-?){1,2},?\s*)+$

RegEx匹配特定格式的一串数字？

6 个答案: