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 (06/23)

  • Nothing!

Tuesday (06/24)

  • No section today!

Wednesday (06/25)

  • No PCM for today!
  • 👥 Lesson 0: Welcome; Syllabus Meet in PCAR 391

Thursday (06/26)

  • 🧑‍🏫 Section 0: Welcome & Software Setup

Friday (06/27)

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 06/23
Tue 06/24
Wed 06/25
LES 00 Welcome; Syllabus
in-class: pdf pptx
Thu 06/26
SEC 00 Welcome & Software Setup
Fri 06/27
LES 01 Inheritance; Polymorphism
pre-class: materials
resources:
Videos
Released
C0
Search Engine
I.S. by 11:59 pm
Week 1
Mon 06/30
Tue 07/01
SEC 01 Inheritance; Polymorphism
Wed 07/02
LES 02 Abstract Classes
pre-class: materials
Thu 07/03
SEC 02 Abstract Classes
Released
P0
Ciphers
I.S. by 11:59 pm
Fri 07/04
HOLIDAY Independence Day
Week 2
Mon 07/07
Released
R0
Resub 0
C0 Due 11:59 pm
Tue 07/08
QUIZ 00 Quiz 0

Note: Information for Quiz 0

  • Topics on Quiz: Testing, Comparable, Inheritance, Polymorphism, Abstract Classes

Wed 07/09
LES 03 Implementing Data Structures; ArrayIntList
Thu 07/10
SEC 04 Implementing Data Structures
Released
C1
Abstract Strategy Games
I.S. by 11:59 pm
Fri 07/11
LES 04 References; LinkedNodes
Week 3
Mon 07/14
Released
R1
Resub 1
C0, P0 Due 11:59 pm
Tue 07/15
SEC 05 References; Linked Nodes
Wed 07/16
LES 05 Modifying Links; LinkedIntList
Thu 07/17
SEC 06 Linked Lists
Released
P1
Mini-Git [ArrayRepository]
I.S. by 11:59 pm
Fri 07/18
LES 06 Runtime Analysis
Week 4
Mon 07/21
Released
R2
Resub 2
C0, P0, C1 Due 11:59 pm
Tue 07/22
QUIZ 01 Quiz 1

Note: Information for Quiz 1

  • Topics on Quiz: Implementing Data Structures (ArrayLists and LinkedLists)
  • Topics not on Quiz: Runtime

Wed 07/23
LES 07 Recursive Tracing
Thu 07/24
SEC 08 Recursive Tracing
Released
P2
Mini-Git [LinkedRepository]
I.S. by 11:59 pm
Fri 07/25
LES 08 Recursive Programming
Week 5
Mon 07/28
Released
R3
Resub 3
P0, C1, P1 Due 11:59 pm
Tue 07/29
SEC 09 Recursive Programming
Wed 07/30
LES 09 Linked Lists w/ Recursion
Thu 07/31
SEC 10 Linked Lists w/ Recursion
Released
C2
Mondrian Art
I.S. by 11:59 pm
Fri 08/01
LES 10 Binary Trees
Week 6
Mon 08/04
Released
R4
Resub 4
C1, P1, P2 Due 11:59 pm
Tue 08/05
QUIZ 02 Quiz 2

Note: Information for Quiz 2

  • Topics on Quiz: Recursion (tracing, programming), Recursion on Linked Lists
  • Topics not on Quiz: Binary Trees

Wed 08/06
LES 11 Binary Trees Modification; Binary Search Trees
Thu 08/07
SEC 12 Binary Trees (Introduction & Modification)
Released
C3
ZiaoFeed Quiz
I.S. by 11:59 pm
Fri 08/08
LES 12 Recursive Backtracking
Week 7
Mon 08/11
Released
R5
Resub 5
P1, P2, C2 Due 11:59 pm
Tue 08/12
SEC 13 Recursive Backtracking
Wed 08/13
LES 13 Machine Learning; Spam Classifier

Note: No PCM for today!

Thu 08/14
SEC 14 Final Exam Review 1
Released
P3
Spam Classifier
I.S. by 11:59 pm
Fri 08/15
LES 14 Victory Lap & Next Steps

Note: No PCM for today!

Week 8
Mon 08/18
Tue 08/19
SEC 15 Final Exam Review 2
Released
R6
Resub 6
P2, C2, C3 Due 11:59 pm
Wed 08/20
EXAM Final Exam pt. 1
Thu 08/21
SEC 16 Office Hours
Fri 08/22
EXAM Final Exam pt. 2
Week 9
Mon 08/25
Tue 08/26
Wed 08/27
Thu 08/28
Fri 08/29
Week 10
Mon 09/01
Tue 09/02
Wed 09/03
Thu 09/04
Fri 09/05