FA-12540 / Biological sequence representation / Member archive

Unknown bases are deleted before k-mer extraction · case 05

Unknown bases are deleted before k-mer extraction.

Member previewVariant 5 · 3 implementations · 6 checks per implementation

Case contract

For uppercase ACGTN input, return length-k contiguous windows containing no N, preserving repeats and order; k positive. N breaks eligibility without removing positions.

Why this case matters

An offline abstract sequence-data model; useful for testing representation invariants without biological inference.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
variable barrier	`["AA", "AA", "AA", "AA", "AC"]`	`["AA", "AA", "AA", "AA"]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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