explaingit

kodecocodes/swift-algorithm-club

29,103SwiftAudience · developerComplexity · 1/5StaleLicenseSetup · easy

TLDR

A collection of algorithms and data structures implemented in Swift with plain-English explanations, designed for learning rather than production use.

Mindmap

mindmap
  root((repo))
    What it does
      Algorithms
      Data structures
      Learning resource
    Algorithm types
      Searching
      Sorting
      String search
      Compression
    Data structures
      Trees and graphs
      Stacks and queues
      Hash tables
    Use cases
      Interview prep
      Learning CS
      Reference code

Things people build with this

USE CASE 1

Study how classic algorithms like quicksort, binary search, and Huffman coding work before implementing them yourself.

USE CASE 2

Prepare for technical interviews by reviewing readable implementations of data structures like trees, heaps, and hash tables.

USE CASE 3

Understand string-search algorithms like Boyer-Moore by reading step-by-step explanations alongside working Swift code.

Tech stack

SwiftXcode

Getting it running

Difficulty · easy Time to first run · 5min
Use freely for any purpose including commercial, as long as you keep the copyright notice.

In plain English

The Swift Algorithm Club is a learning resource that implements common algorithms and data structures in Swift, each accompanied by a plain-English explanation of how it works. The goal is not to produce a drop-in library but to make the concepts understandable, the focus is on readable code and clear explanations rather than raw performance optimization. The collection covers algorithms in several areas. Searching algorithms include linear search, binary search (which finds items quickly in a sorted list by repeatedly halving the search space), and union-find. String search algorithms include Boyer-Moore and Knuth-Morris-Pratt, which scan text efficiently by skipping sections rather than checking every character. Sorting algorithms range from simple educational ones like insertion sort and bubble sort to fast practical ones like quicksort, merge sort, and heap sort. Compression methods include run-length encoding and Huffman coding. Data structures covered include stacks, queues, heaps, binary search trees, hash tables, tries, graphs, and several variants of arrays. There is also a mathematics section covering things like greatest common divisor and permutations, and a machine learning section covering k-Means clustering and linear regression. Someone would use this repository when learning computer science fundamentals, preparing for technical interviews, or wanting a readable reference implementation of a specific algorithm before adapting it for their own Swift project. The code targets Xcode 10 and Swift 4.2.

Copy-paste prompts

Prompt 1
Show me how binary search works in Swift and explain why it's faster than checking every item in a list.
Prompt 2
I need to understand merge sort before my interview. Can you walk me through the Swift implementation in this repo?
Prompt 3
Explain how a trie data structure works and show me the Swift code from the Algorithm Club.
Prompt 4
I'm learning about hash tables. Can you break down the Swift implementation and explain how collisions are handled?
Prompt 5
Show me the difference between quicksort and heap sort using the Swift examples from this collection.
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Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.