Data Structures - Computer Science Course for Beginners

Learn all about Data Structures in this lecture-style course. You will learn what Data Structures are, how we measure a Data Structures efficiency, and then hop into talking about 12 of the most common Data Structures which will come up throughout your Computer Science journey.

✏️ Course created by Steven from NullPointer Exception. Check out their channel: https://www.youtube.com/channel/UCmWDlvMYYEbW42B8JyxFBcA

⭐️ Script, Visuals, and Sources ⭐️ 🔗 Google Folder: https://tinyurl.com/yxr64y46

⭐️ Links as They Appear ⭐️ 🔗 An Introduction to Programming: https://www.youtube.com/watch?v=zOjov-2OZ0E 🔗 Binary Search Explanation: https://youtu.be/zOjov-2OZ0E?t=5566 🔗 Linear Search Explanation: https://youtu.be/zOjov-2OZ0E?t=5457 🔗 Introduction to Object Oriented Programming: https://www.youtube.com/watch?v=3ycztbPPOlc 🔗 Recursion Explanation: https://youtu.be/zOjov-2OZ0E?t=5787 🔗 Article explaining Backed Data Structures: https://tinyurl.com/y3fs9lt7

⭐️ Course Contents ⭐️ 💻 (00:00) Introduction ⌨️ (01:06) Timestamps ⌨️ (01:23) Script and Visuals ⌨️ (01:34) References + Research ⌨️ (01:56) Questions ⌨️ (02:12) Shameless Plug ⌨️ (02:51) What are Data Structures? ⌨️ (04:36) Series Overview 💻 (06:55) Measuring Efficiency with BigO Notation ⌨️ (09:45) Time Complexity Equations ⌨️ (11:13) The Meaning of BigO ⌨️ (12:42) Why BigO? ⌨️ (13:18) Quick Recap ⌨️ (14:27) Types of Time Complexity Equations ⌨️ (19:42) Final Note on Time Complexity Equations 💻 (20:21) The Array ⌨️ (20:58) Array Basics ⌨️ (22:09) Array Names ⌨️ (22:59) Parallel Arrays ⌨️ (23:59) Array Types ⌨️ (24:30) Array Size ⌨️ (25:45) Creating Arrays ⌨️ (26:11) Populate-First Arrays ⌨️ (28:09) Populate-Later Arrays ⌨️ (30:22) Numerical Indexes ⌨️ (31:57) Replacing information in an Array ⌨️ (32:42) 2-Dimensional Arrays ⌨️ (35:01) Arrays as a Data Structure ⌨️ (42:21) Pros and Cons 💻 (43:33) The ArrayList ⌨️ (44:42) Structure of the ArrayList ⌨️ (45:19) Initializing an ArrayList ⌨️ (47:34) ArrayList Functionality ⌨️ (49:30) ArrayList Methods ⌨️ (50:26) Add Method ⌨️ (53:57) Remove Method ⌨️ (55:33) Get Method ⌨️ (55:59) Set Method ⌨️ (56:57) Clear Method ⌨️ (57:30) toArray Method ⌨️ (59:00) ArrayList as a Data Structure ⌨️ (1:03:12) Comparing and Contrasting with Arrays 💻 (1:05:02) The Stack ⌨️ (1:05:06) The Different types of Data Structures ⌨️ (1:05:51) Random Access Data Structures ⌨️ (1:06:10) Sequential Access Data Structures ⌨️ (1:07:36) Stack Basics ⌨️ (1:09:01) Common Stack Methods ⌨️ (1:09:45) Push Method ⌨️ (1:10:32) Pop Method ⌨️ (1:11:46) Peek Method ⌨️ (1:12:27) Contains Method ⌨️ (1:13:23) Time Complexity Equations ⌨️ (1:15:28) Uses for Stacks 💻 (1:18:01) The Queue ⌨️ (1:18:51) Queue Basics ⌨️ (1:20:44) Common Queue Methods ⌨️ (1:21:13) Enqueue Method ⌨️ (1:22:20) Dequeue Method ⌨️ (1:23:08) Peek Method ⌨️ (1:24:15) Contains Method ⌨️ (1:25:05) Time Complexity Equations ⌨️ (1:27:05) Common Queue Uses 💻 (1:28:16) The Linked List ⌨️ (1:31:37) LinkedList Visualization ⌨️ (1:33:55) Adding and Removing Information ⌨️ (1:41:28) Time Complexity Equations ⌨️ (1:44:26) Uses for LinkedLists 💻 (1:47:19) The Doubly-LinkedList ⌨️ (1:48:44) Visualization ⌨️ (1:50:56) Adding and Removing Information ⌨️ (1:58:30) Time Complexity Equations ⌨️ (1:59:06) Uses of a Doubly-LinkedList 💻 (2:00:21) The Dictionary ⌨️ (2:01:15) Dictionary Basics ⌨️ (2:02:00) Indexing Dictionaries ⌨️ (2:02:40) Dictionary Properties 💻 (2:05:53) Hash Table Mini-Lesson ⌨️ (2:13:26) Time Complexity Equations 💻 (2:16:39) Trees ⌨️ (2:16:55) Introduction to Hierarchical Data ⌨️ (2:18:54) Formal Background on the Tree ⌨️ (2:20:03) Tree Terminology and Visualization ⌨️ (2:25:08) Different types of Trees ⌨️ (2:28:07) Uses for the Tree 💻 (2:29:00) Tries ⌨️ (2:29:50) Trie Basics ⌨️ (2:30:41) Trie Visualization ⌨️ (2:34:33) Flagging ⌨️ (2:35:15) Uses for Tries 💻 (2:38:25) Heaps ⌨️ (2:38:51) Heap Basics ⌨️ (2:39:19) Min-Heaps ⌨️ (2:40:07) Max-Heaps ⌨️ (2:40:59) Building Heaps ⌨️ (2:44:20) Deleting from Heaps ⌨️ (2:46:00) Heap Implementations 💻 (2:48:15) Graphs ⌨️ (2:49:25) Graph Basics ⌨️ (2:52:04) Directed vs. Undirected Graphs ⌨️ (2:53:45) Cyclic vs. Acyclic Graphs ⌨️ (2:55:04) Weighted Graphs ⌨️ (2:55:46) Types of Graphs 💻 (2:58:20) Conclusion 💻 (2:58:43) Shameless Plug

--

Learn to code for free and get a developer job: https://www.freecodecamp.org

Read hundreds of articles on programming: https://freecodecamp.org/news

And subscribe for new videos on technology every day: https://youtube.com/subscription_center?add_user=freecodecamp