CS 225

Fall 2026 All Classes

All Classes

Data Structures

Credit: 4 hours.

Data abstractions: elementary data structures (lists, stacks, queues, and trees) and their implementation using an object-oriented programming language. Solutions to a variety of computational problems such as search on graphs and trees. Elementary analysis of algorithms.

Credit is not given toward graduation for: CS 277 if credit for CS 225 has been earned. Prerequisite: CS 126 or CS 128 or ECE 220; One of CS 173, CS 413, MATH 213, MATH 314, MATH 347, MATH 412, or MATH 413.

Students must register for one laboratory-discussion and one lecture section.

This course satisfies the General Education Criteria in Fall 2022 for:

Quantitative Reasoning II

My Favorites

My Schedule

Section Status updates every 10 minutes.

CS 225 class schedule data for fall 2026
CRN	Type	Section	Time	Day	Location	Instructor	Section Details
65054	Laboratory-Discussion	ABA	9:00AM -10:50AM	R	4025 Campus Instructional Facility		Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
61264	Laboratory-Discussion	ABB	9:00AM -10:50AM	R	4029 Campus Instructional Facility	Solomon, B	Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
35926	Laboratory-Discussion	ABC	11:00AM -12:50PM	R	4025 Campus Instructional Facility	Solomon, B	Availability: Closed Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
35923	Laboratory-Discussion	ABD	11:00AM -12:50PM	R	4029 Campus Instructional Facility		Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
35944	Laboratory-Discussion	ABE	1:00PM -2:50PM	R	4025 Campus Instructional Facility		Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
58757	Laboratory-Discussion	ABF	1:00PM -2:50PM	R	4029 Campus Instructional Facility		Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
62137	Laboratory-Discussion	ABG	3:00PM -4:50PM	R	4025 Campus Instructional Facility		Availability: Closed Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
58758	Laboratory-Discussion	ABH	3:00PM -4:50PM	R	4029 Campus Instructional Facility		Availability: Closed Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
35947	Laboratory-Discussion	ABI	5:00PM -6:50PM	R	4025 Campus Instructional Facility		Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
35954	Laboratory-Discussion	ABJ	5:00PM -6:50PM	R	4029 Campus Instructional Facility		Availability: Open Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course.
35917	Lecture	AL1	11:00AM -11:50AM	MWF	AUD Foellinger Auditorium	Beckman, M Solomon, B Srimath Tirumala, H	Availability: CrossListOpen (Restricted) Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course. Section Info: This section is for CS, CS&, CS+X and Computer Engineering majors only. These restrictions remain in place throughout registration. For up-to-date information about CS course restrictions, please see the following link: http://go.cs.illinois.edu/csregister Restriction(s): Restricted to Undergrad - Urbana-Champaign. Restricted to CS and blended CS majors students.
72271	Lecture	AL2	11:00AM -11:50AM	MWF	AUD Foellinger Auditorium	Beckman, M Solomon, B Srimath Tirumala, H	Availability: CrossListOpen (Restricted) Part of Term: 1 Date Range: 08/24/26-12/09/26 Degree Notes: Quantitative Reasoning II course. Section Info: This section is for CS minors, NON CS majors, and general campus. These restrictions remain in place throughout registration. Restriction(s): Restricted to Undergrad - Urbana-Champaign. Not intended for CS and blended CS majors students.