A-Level Edexcel Programming: Data Structures, Algorithms and Computational Thinking | A-Level Edexcel 编程：数据结构、算法与计算思维

📚 A-Level Edexcel Programming: Data Structures, Algorithms and Computational Thinking | A-Level Edexcel 编程：数据结构、算法与计算思维

Programming is at the heart of the Edexcel A-Level Computer Science specification. This article develops the core ideas you need for Paper 1 and the practical programming project, from clear pseudocode to evaluating algorithms.

编程是 Edexcel A-Level 计算机科学考试大纲的核心。本文帮你构建 Paper 1 和编程项目所需的核心思想，从清晰的伪代码到算法评估。

1. Computational Thinking and Problem Decomposition | 计算思维与问题分解

Before writing a single line of code, examiners expect you to show how you would analyse a problem. Computational thinking means breaking a task into smaller, solvable parts.

在写任何代码之前，考官希望看到你如何分析问题。计算思维意味着把一个任务拆分成更小、可解决的部分。

Decomposition reduces complexity by splitting a large problem into subproblems. For example, a library system can be separated into user login, book search, borrowing and fine calculation.

分解通过把大问题拆成子问题来降低复杂性。例如，图书馆系统可以分为用户登录、图书检索、借阅和罚款计算。

Pattern recognition finds similarities between the current problem and problems you have solved before, such as recognising that a maze can be modelled as a graph.

模式识别寻找当前问题与你以前解决过的问题之间的相似之处，例如识别出迷宫可以建模为图。

Abstraction keeps only the information that is relevant to the solution. When writing a sorting function, you do not need

Published by TutorHao | A-Level 编程 Revision Series | aleveler.com

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