FA-12500 / Biological sequence representation / Member archive
Ambiguous sequence symbols are compared as literal letters · case 05
Ambiguous sequence symbols are compared as literal letters.
Case contract
For equal-length strings over A,C,G,T,R,N, return whether every aligned pair has intersecting sets; R={A,G}, N={A,C,G,T}. Unequal lengths are false.
Why this case matters
An offline abstract sequence-data model; useful for testing representation invariants without biological inference.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| variable ambiguity | false | true | Failed |
MEMBER ARCHIVE
The complete case is available to members.
This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
Member access is invitation-based. Sign in with your invited account to inspect the sources.
Sign in to the archive ↗