# algorithm - 算法经典题库

> A reference guide to classic algorithms and data structures for developers and students. (iPhone/iPad app by 晓波 段.)

- Source: https://appshunter.io/ios/app/algorithm/id1528718253 (this page in markdown: same URL + `.md`)
- Developer: [晓波 段](https://appshunter.io/developer/1446242443)
- Category: Education, Reference
- Price: $0.99
- Rating: 4.90/5 from 21 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 27 MB
- Languages: English
- Released: 2020-08-24
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/algorithm/id1528718253/reviews.md

## What is algorithm?

算法，主要是以下几种：
1，基础技巧：分治、二分、贪心
2，排序算法：快速排序、归并排序、计数排序
3，搜索算法：回溯、递归、深度优先遍历，广度优先遍历，二叉搜索树等
4，图论：最短路径、最小生成树
5，动态规划：背包问题、最长子序列数据结构，
主要数据结构有如下几种：
1，数组与链表：单 / 双向链表
2，栈与队列
3，哈希表
4，堆：最大堆 ／ 最小堆
5，树与图：最近公共祖先、并查集
6，字符串：前缀树（字典树） ／ 后缀树

## Key features

- Classic algorithms
- Fundamental data structures
- Sorting algorithms
- Search algorithms
- Graph theory
- Dynamic programming

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/algorithm/id1528718253/reviews.md

### 4/5 — please fix the bug that I can't retrieve answer anymore

*2023-01-15, version 2.0.0*

As title

### 5/5 — It will be perfect if I can get answer output or redirect to email or somewhere like others

*2022-03-06, version 2.0.0*

As title

## Frequently asked questions about algorithm

### What algorithms does Algorithm cover?

Algorithm covers fundamental algorithms including divide and conquer, binary search, greedy algorithms, various sorting algorithms (quick sort, merge sort, counting sort), search algorithms (backtracking, recursion, DFS, BFS, BST), graph theory (shortest path, minimum spanning tree), and dynamic programming (knapsack problems, longest subsequence).

### What data structures are included in Algorithm?

Algorithm details key data structures such as arrays and linked lists (singly/doubly), stacks and queues, hash tables, heaps (max/min), trees and graphs (LCA, Union-Find), and string structures like prefix trees (Trie) and suffix trees.

### What is the price of Algorithm?

Algorithm is available for a one-time purchase of $0.99.

### On which devices can I use Algorithm?

Algorithm is compatible with iPhones, iPads, and iPods.

### How often is Algorithm updated?

The latest version, 2.0.0, was released on September 8, 2020. The app was initially released on August 24, 2020.

### What is the age rating for Algorithm?

Algorithm has an age rating of 4+, making it suitable for a wide range of users.

### What do users like about Algorithm?

Users appreciate the app's high rating of 4.9 stars from 21 ratings, indicating strong user satisfaction with its content and presentation.

### Does Algorithm offer any certifications?

The provided information does not mention any certifications offered by Algorithm. It serves as a reference and learning tool for algorithms and data structures.

## Version history (last 1 release)

### 2.0.0 — 2020-09-08

1,支持iPad版本

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All apps by 晓波 段: https://appshunter.io/developer/1446242443

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*