基于连续行vals字段字符匹配更新idx字段并优化代码

Hey there! Let's break down these Markdown formatting rules into an easy-to-follow cheat sheet, complete with practical examples for each case:

Headings #

Create hierarchical headings using number signs (#). The number of #s corresponds to the heading level—1 is the largest, 6 the smallest:

# Main Heading (Level 1)
## Subheading (Level 2)
### Sub-subheading (Level 3)

List Items #

For unordered lists, start each item with a dash (-). Nest lists by indenting nested items with 2 spaces:

- First top-level item
- Second top-level item
  - Nested list item
  - Another nested item

Text Emphasis #

Wrap text in asterisks to add emphasis. Use single asterisks for italicized text, double asterisks for bold text:

*This text will appear italicized*
**This text will appear bold**

Code or Commands #

Surround code snippets, terminal commands, or inline code with backticks (`) to format them as monospaced text. For multi-line code blocks, use three backticks:

# Inline code example
Run `python script.py` to execute your program.

# Multi-line code block example
```javascript
function calculateSum(a, b) {
  return a + b;
}

## Quoted Text
Use a greater-than sign (`>`) at the start of a line to format text as a blockquote—perfect for citing content or highlighting notes:
```markdown
> "The best way to predict the future is to invent it." — Alan Kay

Links #

Create clickable links by wrapping the link text in square brackets ([]), followed immediately by the target URL in parentheses (()):

[Explore Stack Overflow](https://stackoverflow.com)

Images #

Embed images using a similar structure to links, but add an exclamation mark (!) at the start. The square brackets hold alt text (for accessibility), and the parentheses hold the image URL:

[A cozy cat curled up on a book](https://example.com/cat-book.jpg)

内容的提问来源于stack exchange，提问作者everestial