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.

Announcements

This Week (at a glance)

Monday (12/02)

  • Nothing!

Tuesday (12/03)

  • 🧑‍🏫 Section 17: Final Exam Review 1

Wednesday (12/04)

  • No PCM today!
  • 👥 Lesson 18: Final Exam Review Meet in KNE 120

Thursday (12/05)

  • 🧑‍🏫 Section 18: Final Exam Review 2

Friday (12/06)

  • No PCM today!
  • 👥 Lesson 19: Victory Lap & Next Steps Meet in KNE 120

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!

Lessons

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

Topic Programming / Creative Projects Resubmissions
Week 0
Mon 09/23
Tue 09/24
Wed 09/25
LES 00 Welcome; Syllabus; Review (JUnit / OOP / Comparable)

Note: Normally you would complete the Pre-class Work before class. There is nothing you need to complete before class today! Instead, please review the Ed lesson in more detail after class.

Thu 09/26
SEC 00 Welcome & Software Setup
Released
C0
Warm Up/Review
I.S. by 11:59 pm
Fri 09/27
LES 01 Inheritance; Polymorphism
Week 1
Mon 09/30
Tue 10/01
SEC 01 Inheritance; Polymorphism
Wed 10/02
LES 02 Abstract Classes
Thu 10/03
SEC 02 Abstract Classes
Released
P0
Ciphers
I.S. by 11:59 pm
Fri 10/04
LES 03 Implementing Data Structures; ArrayIntList
Week 2
Mon 10/07
Tue 10/08
SEC 03 Implementing Data Structures
Wed 10/09
LES 04 References; Linked Nodes
Released
R1
Resub 1
Due 11:59 pm
Thu 10/10
SEC 04 Linked Nodes; References
Released
C1
Abstract Strategy Games
I.S. by 11:59 pm
Fri 10/11
LES 05 Linked Nodes w/ Loops

Note: No PCM for today! Instead, please ensure you are completely comfortable with the Section material on Linked Nodes

Week 3
Mon 10/14
Released
R2
Resub 2
Due 11:59 pm
Tue 10/15
QUIZ 00 Quiz 0

Note: Information for Quiz 0

  • Topics on Quiz: OOP, Testing, Comparable, Inheritance, Polymorphism
  • Topics not on Quiz: Abstract Classes

Wed 10/16
LES 06 Modifying Links; LinkedIntList
Thu 10/17
SEC 06 Linked Nodes w/ Loops
Released
P1
Mini-Git
I.S. by 11:59 pm
Fri 10/18
LES 07 Runtime
Week 4
Mon 10/21
Released
R3
Resub 3
Due 11:59 pm
Tue 10/22
SEC 07 Linked Lists
Wed 10/23
LES 08 Recursive Tracing
Thu 10/24
SEC 08 Recursive Tracing
Fri 10/25
LES 09 Recursive Programming
Week 5
Mon 10/28
Released
R4
Resub 4
Due 11:59 pm
Tue 10/29
QUIZ 01 Quiz 1

Note: Information for Quiz 1

  • Topics on Quiz: Abstract classes, Implementing data structures (ArrayLists / LinkedLists), Runtime
  • Topics not on Quiz: Recursion

Wed 10/30
LES 10 Exhaustive Search
Thu 10/31
SEC 10 Recursive Programming
Released
C2
Mondrian Art
I.S. by 11:59 pm
Fri 11/01
LES 11 Recursive Backtracking
Week 6
Mon 11/04
Released
R5
Resub 5
Due 11:59 pm
Tue 11/05
SEC 11 Exhaustive Search & Recursive Backtracking
Wed 11/06
LES 12 Linked Lists w/ Recursion
Thu 11/07
SEC 12 Linked Lists w/ Recursion
Released
P2
Disaster Relief
I.S. by 11:59 pm
Fri 11/08
LES 13 Binary Trees: Traversal
Week 7
Mon 11/11
Released
R6
Resub 6
Due 11:59 pm
Tue 11/12
SEC 13 Binary Trees: Introduction
Wed 11/13
LES 14 Binary Trees: Modification

Note: No PCM for today!

Thu 11/14
SEC 14 Binary Trees: Modification
Fri 11/15
LES 15 Machine Learning; SpamClassifier

Note: No PCM for today!

Released
P3
Spam Classifier
I.S. by 11:59 pm
Week 8
Mon 11/18
Released
R7
Resub 7
Due 11:59 pm
Tue 11/19
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, Binary Search Trees, Machine Learning

Wed 11/20
LES 16 Binary Search Trees
Thu 11/21
SEC 16 TA Choice
Fri 11/22
LES 17 Hashing
Week 9
Mon 11/25
Released
C3
Better than Spam
I.S. by 11:59 pm
Tue 11/26
HOLIDAY Thanksgiving week
Wed 11/27
HOLIDAY Thanksgiving week
Thu 11/28
HOLIDAY Thanksgiving week
Fri 11/29
HOLIDAY Thanksgiving week
Week 10
Mon 12/02
Released
R8
Resub 8 (due Sunday 12/8)
Due 11:59 pm
Tue 12/03
SEC 17 Final Exam Review 1
Wed 12/04
LES 18 Final Exam Review

Note: No PCM Today!

in-class: materials
resources:
Released
R9
Resub-JAMES (due Sunday 12/8)
Due 11:59 pm
Thu 12/05
SEC 18 Final Exam Review 2
Fri 12/06
LES 19 Victory Lap & Next Steps

Note: No PCM Today!

Week 11
Mon 12/09 Review Session 4:30pm-7:00 GUG 220
Tue 12/10
EXAM Final Exam - 12:30-2:20pm (KNE 120 & 130)
Wed 12/11
Thu 12/12
Fri 12/13