给定n和k，构造和为k的最小字典序n长小写字符串

Got it, let's break down these Markdown formatting rules into an easy-to-follow cheat sheet with practical examples, so you can apply them quickly:

Headings #

Use number signs (#) to create hierarchical headings. The more # you use, the lower the heading level:

• # Level 1 Heading → # Level 1 Heading
• ## Level 2 Heading → ## Level 2 Heading
• ### Level 3 Heading → ### Level 3 Heading
  You can go up to 6 levels total.

List Items #

Start every list item with a dash (-). To nest lists, just indent the nested items with a couple of spaces:

• First main list item
• Second main list item
  • Nested list item 1
  • Nested list item 2

Text Emphasis #

Wrap text with asterisks (*) to add emphasis:

• For italic text: *This is italicized* → This is italicized
• For bold text: **This is bolded** → This is bolded

Code & Commands #

Surround code snippets, terminal commands, or inline code with backticks (`):

• Inline code: npm install react
• Multi-line code blocks (use three backticks to wrap the whole block):

function greet(name) {
  console.log(`Hello, ${name}!`);
}

Quoted Text #

Use a greater-than sign (>) to mark quoted content. For multi-line quotes, add > to each line:

This is a single-line quote.

This is a multi-line quote—each line starts with >
to keep the block intact.

Links #

Format links by putting the display text in square brackets ([]), followed by the target path/URL in parentheses (()):

• Example for a relative link: [My Blog Posts](/posts) → My Blog Posts
• Example for a named anchor: [Jump to Section](#level-2-heading) → Jump to Section

Images #

For images, use square brackets ([]) for alt text (descriptive text for accessibility), then the image path/URL in parentheses (()):

• Example: [Scenic Mountain View](/images/mountains.jpg) → Scenic Mountain View
  Alt text helps make your content accessible to users relying on screen readers, so it's a good practice to include it!

内容的提问来源于stack exchange，提问作者irs102info