Data Structure Display vs 直接记

A novel data structure learning app, the most significant feature is that you can dynamically debug the data structure in this app, and visually observe the changes in the data structure during the operation. In this app you can learn the following data structures: 1. Linear structures, including arrays, linked lists, queues, stacks. Linear structures are the basis for other advanced data structures, as fine as advanced algorithms. 2. Tree structures, including binary tree, binary search tree, AVL tree, red-black tree, and heap. In this app, you can dynamically debug three traversals of the binary tree (including non-recursive traversal implementations), searching in the tree, balance adjustments in the AVL tree and red-black tree, and heap sorting. Give you the ability of handwritten red-black trees. 3. Graph structure, including the adjacency list storage representation of the graph structure, depth-first search and breadth-first search, finding the Euler path in the graph, topological sorting, maximum connected components, minimum spanning tree problem, and shortest single source Path problem. It also provides dynamic debugging of these classic graph algorithms. 4. The data structure introductory class will talk about the problem of the Tower of Hanoi. The algorithm that solves this problem is often recursive. This app provides dynamic debugging of the Tower of Hanoi problem, so you can no longer be confused about the recursive calls of the Tower of Hanoi.

DirectWords 是一个尽量减少操作成本的背单词工具。 你不需要手动打分，也不需要自己规划复习路径。面对每个单词，只需做一次“记得 / 不记得”的判断，应用就会根据你的记忆表现自动安排下一次复习，让学习更专注，也更容易坚持。 适合正在准备： 初中 / 高中 / CET4 / CET6 / 考研 / 托福 / SAT 也适合希望用自定义词库长期积累词汇的人。 功能亮点： • 极简复习：每个词只做一次“记得 / 不记得”判断，降低操作负担 • 自动安排节奏：系统优先处理到期复习，再补当天新词 • 词义即时补充：点“不记得”后可立即查看释义、词组和相关内容 • 主屏幕快速复习：通过小组件直接完成记得 / 不记得 • 进度一目了然：查看近 7 天学习质量、热力图和连续学习天数 • 词库灵活：内置多类考试词库，也支持导入 JSON 单词本 • 个性化设置：支持每日新词目标、左右手操作偏好、当前词库切换 如果你想要一个更轻、更快、更少干扰的背单词方式，DirectWords 会把复杂的复习安排留给系统，把注意力还给你。