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Fall · CS 241

CS 241 · lec 14 — graphs / BFS

Tue 11:00 · Hall 104
Today
- adjacency list vs matrix — prof said sparse graphs → list, dense maybe matrix (idk pset will tell)
- BFS = queue, dequeue front, enqueue unvisited neighbors + visited set or infinite loop lol
- unweighted shortest path = BFS by layers (they proved on board, follow slides)
To do
PSet 4 — fri 😭Fri
skim ch 22.2–22.3 before lab
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Tue · 9:50 AM
MATH 240 — Lec
Tue · 11:00 AM
CS 241 — Lec
Wed · 11:00 AM
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Econ 101 — exam review
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Tue · 10:00 AM
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Tue · 9:50 AM
MATH 240 — Lec
Tue · 11:00 AM
CS 241 — Lec
Wed · 11:00 AM
Registrar hold
Thu · 4:00 PM
Econ 101 — exam review
Mon · 7:00 PM
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PHYS 201 — Lab
Tue · 10:00 AM
Scholarship workshop
Tue · 5:00 PM
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9:00MATH 240 — Lec
10:30CS 241 — Lec
12:30Library — PSet block
3:00Debate prep
Wed
10:00PHIL 110 — Disc
12:00Paper draft — quiet floor
2:30CS 241 — OH
Thu
10:30PHYS 201 — Lab
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CS 241 — Lec 14.mdUpdated just now

# CS 241 — lec 14 (graphs / BFS)

CS 241 · Lec 14Tue 11:00 AM · Hall 104
## Today
- adjacency list vs matrix — prof said sparse → list is fine, matrix wastes space
- BFS walkthrough: queue + visited (seriously dont skip visited)
- unweighted shortest path = run BFS layer by layer
## after class
- ask at OH: directed graphs?? pset wording weird
- screenshot slide 7 before prof wipes whiteboard
## To do
PSet 4 — due fri
skim ch 22.2–22.3 before lab

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  • PSet 4 — CS 241Due Fri
  • Reading — Ch. 22.2–22.3CS 241
  • Essay outline — PHIL 110Due Thu
  • MATH 240 — problem 7Thu OH
  • Lab 3 writeupPHYS 201
  • Register for spring coursesReminder

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Fall semester
7 classes & blocks pinned
Tue · 11:00 AM
CS 241 — Lec
TuTh
Tue · 9:50 AM
MATH 240 — Lec
MWF
Wed · 1:00 PM
PHYS 201 — Lab
Wed
Thu · 10:00 AM
PHIL 110 — Disc
Thu
Wed · 2:30 PM
CS 241 — OH
Weekly
Thu · 4:00 PM
Library — focus
Ad-hoc
Fri · 3:00 PM
Study group — PSet 4
Weekly
Pin a class
CS 241 — Lec
BFS = queue + visited or infinite loop PSet 4 — rough draft by Thu night
MATH 240 — Lec
Eigenstuff quiz Mon — redo practice sheet 6 probs 3–8
PHYS 201 — Lab
Lab 3 writeup + prelab pdf on Canvas Goggles + closed-toe shoes
PHIL 110 — Disc
Nagel bat paper — 1 page, bring hardcopy
CS 241 — OH
Ask TA: directed edges on pset 4 wording?
Library — focus
Thesis intro + 3 sources, phone in backpack
Study group — PSet 4
Rm 214 — Alex bringing sols for 1–3, I take 4–6