Welcome to CSE 123: Introduction to Computer Programming III 🎉

What is this class? What will I learn?

Computing continues to play an ever-increasing role in today’s society. Having an understanding of computing is an essential skill for those in the 21st century; from working in industries more reliant on technology, using computational methods to further scientific understanding, or being an informed citizen in a world with technology all around us.

This course is a third course in computer programming focused on the design and implementation of data structures. It assumes students already have significant experience with programming and understand fundamental computing concepts (such as control structures (loops and conditionals), variables and data, and arrays) as well as basic data structure (lists, sets, stacks, queues, and maps/dictionaries) and the fundamentals of object-oriented programming.

In this course, students will learn:

  1. How to implement compound data structures such as lists and trees.
  2. The use of recursion to efficiently solve computational problems.
  3. How to utilize inheritance to represent relationships among similar classes.
Prior Experience and Expectations

Prerequisite Material

This course is intended for students who already have some programming experience. Students entering CSE 123 should already be familiar with programming constructs for problem decomposition (methods or functions), control structures (loops and conditionals), variables and data types (such as integer data), data structures such as arrays, lists, sets, and maps/dictionaries, and the basics of object-oriented programming.

To better assess if CSE 123 is the right class for you, the Allen School has developed a Self-Guided Placement to help students assess which intro course is the right one for them to enroll in. Please see this website for more information on who to contact if you have questions about which introductory CSE course is the right course for you.

Programming Language

CSE 123 is taught in the Java programming language. Unlike CSE 122, CSE 123 does assume prior experience with the Java programming langauge. If you have not programmed in Java before, or if you would like to get some extra practice or review, please see our Java Tutorial.

Syllabus

If you want to learn more about the course and its policies, please check out our course syllabus.

Feedback

Feedback is always welcome! You can contact the the course staff or submit anonymous feedback.

Registration

Please do not email the course staff or instructors regarding registration for the course. The course staff do not have access to add codes. Please email ugrad-adviser@cs.washington.edu for assistance.

This Week (at a glance)

Monday (06/29)

  • IPL opens!

Tuesday (06/30)

  • 🧑‍🏫 Section 1: Implementing Data Structures

Wednesday (07/01)

Thursday (07/02)

Friday (07/03)

  • University holiday - campus is closed (office hours cancelled)

Calendar

Info

This is a rough sketch of the quarter and things are subject to change. We can accurately predict the past, but predicting the future is hard!

Pre-Class

Anything listed in the “pre-class” materials (PCMs) for a day should be read before attending class that day. The PCMs are a first introduction to the most important terms and concepts for that day of class. It is okay if the PCMs don’t make complete sense as we have the rest of the class day to clarify the concepts, but if you don’t do the PCMs, the class session won’t make any sense.

Topic Programming / Creative Projects Resubmissions
Week 0
Mon 06/22
Tue 06/23
Wed 06/24
LES 00 Welcome; Syllabus

Note: Note: Normally you would complete the Pre-class Work before class. There is nothing you need to complete before class today!

in-class: pdf pptx
resources:
Recordings
Thu 06/25
SEC 00 Welcome & Software Setup
resources: materials
Released
P0
Search Engine
I.S. by 11:59PM PT
Fri 06/26
LES 01 Implementing Data Structures; ArrayIntList; Pre-/Post-Conditions
pre-class: materials
in-class: pdf pptx materials code
resources:
Recordings
Week 1
Mon 06/29
Tue 06/30
SEC 01 Implementing Data Structures
resources: materials
Wed 07/01
LES 02 References; Linked nodes
pre-class: materials
in-class: pdf pptx materials code
resources:
Recordings
Thu 07/02
SEC 02 References; Linked nodes
resources: materials
Released
C0
Abstract Strategy Games
I.S. by 11:59PM PT
Fri 07/03
HOLIDAY Independence Day (Observed)
Week 2
Mon 07/06
Tue 07/07
QUIZ 00 Quiz 0

Note: Information for Quiz 0

  • Topics on Quiz: Testing, ArrayIntList, List Nodes

Wed 07/08
LES 03 Linked Nodes w/ Loops
Released P0 Due 11:59 pm PT
Thu 07/09
SEC 04 Linked Nodes w/ Loops
Released I.S. by 11:59PM PT
Fri 07/10
LES 04 Modifying Links; Linked Int List

Note: No PCM for today! Instead, please review the material on Linked Nodes from Lesson and Section 2

Week 3
Mon 07/13
Released P0, C0 Due 11:59 pm PT
Tue 07/14
SEC 05 Linked Lists
Wed 07/15
LES 05 Runtime Analysis
Thu 07/16
SEC 06 Runtime Analysis
Fri 07/17
LES 06 Recursive Tracing
Week 4
Mon 07/20
Released P0, C0 Due 11:59 pm PT
Tue 07/21
QUIZ 01 Quiz 1

Note: Information for Quiz 1

  • Topics on Quiz: Linked lists, Runtime Analysis
  • Topics not on Quiz: Recursion

Wed 07/22
LES 07 Recursive Programming
Thu 07/23
SEC 08 Recursive Tracing / Programming
Released I.S. by 11:59PM PT
Fri 07/24
LES 08 Binary Trees: Traversal
Week 5
Mon 07/27
Released C0, P1 Due 11:59 pm PT
Tue 07/28
SEC 09 Binary Trees
Wed 07/29
LES 09 Binary Trees: Modification
Thu 07/30
SEC 10 Binary Trees: Modification
Released I.S. by 11:59PM PT
Fri 07/31
LES 10 Comparable Interface / Binary Search Trees
Week 6
Mon 08/03
Released P1, C1 Due 11:59 pm PT
Tue 08/04
QUIZ 02 Quiz 2

Note: Information for Quiz 2

  • Topics on Quiz: Recursion (tracing, programming, exhaustive search, backtracking), Recursion on Linked Lists, Binary tree traversals
  • Topics not on Quiz: Binary tree modifications, Machine Learning

Wed 08/05
LES 11 Inheritance
Thu 08/06
SEC 12 Comparable Interface / Binary Search Trees
Released I.S. by 11:59PM PT
Fri 08/07
LES 12 Abstract Classes / Polymorphism
Week 7
Mon 08/10
Released P1, C1, C2 Due 11:59 pm PT
Tue 08/11
SEC 13 Inheritance
Wed 08/12
LES 13 IntList Case Study
Thu 08/13
SEC 14 Abstract Classes / Polymorphism
Released I.S. by 11:59PM PT
Fri 08/14
LES 14 Exhaustive Search / Recursive Backtracking
Week 8
Mon 08/17
Released C1, C2, P2 Due 11:59 pm PT
Tue 08/18
SEC 15 Final Exam Review
Wed 08/19
LES 15 Victory Lap and Next Steps
Thu 08/20
EXAM Final Exam Pt. 1
Fri 08/21
EXAM Final Exam Pt. 2