Skip to content

Add Extra edge cases #12995

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
MaximSmolskiy merged 3 commits into from
Mar 12, 2026
Merged

Add Extra edge cases #12995

Changes from 2 commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
4f8b772
Add Extra edge cases
VAIBHAVVARORA Sep 25, 2025
790b418
Merge branch 'master' into patch-1
MaximSmolskiy Mar 12, 2026
ec71d3a
Update coloring.py
MaximSmolskiy Mar 12, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions backtracking/coloring.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,15 @@ def color(graph: list[list[int]], max_colors: int) -> list[int]:
>>> max_colors = 2
>>> color(graph, max_colors)
[]
>>> color([], 2) # empty graph
[]
>>> color([[0]], 1) # single node, 1 color
[0]
>>> color([[0, 1], [1, 0]], 1) # 2 nodes, 1 color (impossible)
[]
>>> color([[0, 1], [1, 0]], 2) # 2 nodes, 2 colors (possible)
[0, 1]

"""
colored_vertices = [-1] * len(graph)

Expand Down
Loading