「ASCII 码」是最早出现的字符集，其全称为 American Standard Code for Information Interchange（美国标准信息交换代码）。它使用 7 位二进制数（一个字节的低 7 位）表示一个字符，最多能够表示 128 个不同的字符。如图 3-6 所示，ASCII 码包括英文字母的大小写、数字 0 ~ 9、一些标点符号，以及一些控制字符（如换行符和制表符）。
<u>ASCII（码）</u>是最早出现的字符集，其全称为 American Standard Code for Information Interchange（美国标准信息交换代码）。它使用 7 位二进制数（一个字节的低 7 位）表示一个字符，最多能够表示 128 个不同的字符。如图 3-6 所示，ASCII 码包括英文字母的大小写、数字 0 ~ 9、一些标点符号，以及一些控制字符（如换行符和制表符）。
1962 年 G. M. Adelson-Velsky 和 E. M. Landis 在论文“An algorithm for the organization of information”中提出了「AVL 树」。论文中详细描述了一系列操作，确保在持续添加和删除节点后，AVL 树不会退化，从而使得各种操作的时间复杂度保持在 $O(\log n)$ 级别。换句话说，在需要频繁进行增删查改操作的场景中，AVL 树能始终保持高效的数据操作性能，具有很好的应用价值。
1962 年 G. M. Adelson-Velsky 和 E. M. Landis 在论文“An algorithm for the organization of information”中提出了<u>AVL（树）</u>。论文中详细描述了一系列操作，确保在持续添加和删除节点后，AVL 树不会退化，从而使得各种操作的时间复杂度保持在 $O(\log n)$ 级别。换句话说，在需要频繁进行增删查改操作的场景中，AVL 树能始终保持高效的数据操作性能，具有很好的应用价值。
- Chapters marked with '*' after the title are optional and contain relatively challenging content. If you are short on time, it is advisable to skip them.
- Key technical terms and their English equivalents are enclosed in **Bold** + *italics* brackets, for example, ***array***. It's advisable to familiarize yourself with these for better comprehension of technical texts.
- Proprietary terms and words with specific meanings are indicated with “quotation marks” to avoid ambiguity.
- Technical terms will be in boldface (in the print and PDF versions) or underlined (in the web version), for instance, <u>array</u>. It's advisable to familiarize yourself with these for better comprehension of technical texts.
- **Bolded text** indicates key content or summary statements, which deserve special attention.
- When it comes to terms that are inconsistent between programming languages, this book follows Python, for example using $\text{None}$ to mean "null".
- Words and phrases with specific meanings are indicated with “quotation marks” to avoid ambiguity.
- When it comes to terms that are inconsistent between programming languages, this book follows Python, for example using `None` to mean `null`.
- This book partially ignores the comment conventions for programming languages in exchange for a more compact layout of the content. The comments primarily consist of three types: title comments, content comments, and multi-line comments.
krahets
8 months ago