正则表达式匹配分号前两位数字及空格并替换的技术需求

Got it, let's sort out this string transformation for you. Here's a straightforward regex solution to get exactly the format you're after:

Step 1: Identify the Pattern to Remove #

Each entry in your original string ends with the redundant suffix 0.0 0.0; (or 0.0 0.0; for the final entry). Our goal is to target this suffix and replace it with a clean comma + space separator.

Step 2: The Regular Expression #

Use this regex pattern to match the unwanted portion:

\s+0\.0\s+0\.0;\s*

Let's break down what each part does:

• \s+: Matches one or more whitespace characters (the spaces before the first 0.0)
• 0\.0: Matches the literal 0.0 (we escape the dot with \ because it’s a special regex character that normally matches any character)
• \s+: Another set of one or more spaces between the two 0.0 values
• 0\.0;: Matches the second 0.0 followed by a semicolon
• \s*: Optional trailing whitespace (handles any extra spaces after the final semicolon)

Step 3: Implement the Replacement #

Depending on the tool or language you’re using, here’s how to apply this:

Example in Python

import re

original_string = "-9.853418333333334 35.020405 0.0 0.0;-9.854273333333333 35.02038 0.0 0.0;-9.85452 35.01970166666667 0.0 0.0;-9.854205 35.019618333333334 0.0 0.0;-9.853418333333334 35.020405 0.0 0.0;"
cleaned_string = re.sub(r'\s+0\.0\s+0\.0;\s*', ', ', original_string).rstrip(', ')
print(cleaned_string)

This will output your desired format:

-9.853418333333334 35.020405, -9.854273333333333 35.02038, -9.85452 35.01970166666667, -9.854205 35.019618333333334, -9.853418333333334 35.020405

Example in Text Editors (e.g., Notepad++)

1. Open the Find/Replace dialog (Ctrl+H)
2. Check the "Regular expression" option
3. Find what: \s+0\.0\s+0\.0;
4. Replace with: ,
5. Click "Replace All"
6. Clean up the trailing comma: find , $ and replace with nothing (check "Wrap around" if needed)

Why This Works #

We’re directly targeting the predictable, redundant 0.0 0.0; suffix that follows each coordinate pair. By swapping that for a comma separator, we get the clean, comma-delimited list of coordinate pairs you need.

内容的提问来源于stack exchange，提问作者Theron Morgan-Brown