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Data Structures 101
Module 5 of 8 · Arrays, stacks & queues
60%
Recent activity
Maya Patel commented on Study Buddy App "Auth flow looks great — ready to merge 🎉" 12 min ago
Jordan Kim completed Graph Traversals in Algorithms 101 1 h ago
Taylor Sun joined ML Study Group Yesterday
My projects
Course
Algorithms 101
By Prof. Lee·👤 1.2k learners· 4.8
What you'll learn
Analyze any algorithm with Big-O time and space complexity.
Master sorting, searching, and divide-and-conquer patterns.
Solve graph and dynamic-programming problems with confidence.
Pass technical interviews with 40+ graded practice problems.
A hands-on introduction to algorithms designed for self-paced learners. Each week pairs short video lessons with a graded problem set and a live study room hosted by TAs.
1
Intro & Big-O Notation
Why complexity matters
12:04Free
2
Arrays & Two Pointers
Patterns that show up everywhere
18:32Enrolled
3
Sorting Deep Dive
Merge, quick, and counting sort
22:10Enrolled
4
Graph Traversals
BFS, DFS, and topological order
19:47Enrolled
5
Dynamic Programming
From recursion to tables
25:15Enrolled
Complexity cheat sheet.pdf
Uploaded by Prof. Lee
1.1 MB
Problem set 1.pdf
Due Friday
340 KB
Grading rubric.xlsx
Updated weekly
58 KB
Jordan Kim2 h ago
The graph traversal lecture finally made DFS click for me. Thank you!
Maya Patel5 h ago
Is anyone up for a study room this weekend to tackle problem set 1?
Prof. Lee1 d ago
Great question in lecture 3 — I've posted a follow-up in Files.
Projects
Study Buddy App
About
A flashcard and study-planner app built by our 4-person team for the HCI course. We're currently polishing the spaced-repetition engine and the onboarding flow before the mid-quarter demo.
Activity
Maya merged the auth branch into main
25 min ago
Jordan uploaded Roadmap.xlsx to Files
2 h ago
Alex invited Taylor Sun to the project
Yesterday
Maya moved Set up auth to In Progress
2 d ago
Board · Study Buddy App
Drag cards between columns — the project status updates automatically.
To Do 3
Design login screen
Design
Set up auth
Backend
Write tests
QA
In Progress 2
Build API endpoints
Backend
Connect DB
Infra
Done 4
Project setup
Done
UI kit
Done
ER diagram
Done
Repo & CI pipeline
Done
Files
StudyCircle Study Buddy App
PRD.md
Edited by Maya · 2 d ago
120 KB
Roadmap.xlsx
Edited by Jordan · 5 h ago
45 KB
Logo.svg
Design system v2
15 KB
Readme.txt
Getting started guide
2 KB
Members
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Alex Student
@alex · Seattle, WA
Bio
CS junior who loves study groups, flashcards, and turning caffeine into algorithms. Currently working through Algorithms 101.
The graph traversal lecture finally made DFS click for me. Thank you!