FA-94857 / Warehouse slotting and bin packing / Member archive

ABC velocity: dead stock hidden in C · case 02

SKUs with zero weekly picks are reported as C instead of D, so dead stock is never flagged for removal.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Input [[sku, weekly_picks]]. Rank by picks descending then sku ascending. SKUs with equal picks form a tie group whose cumulative prior share is the picks of strictly faster groups. picks 0 -> D (dead stock); prior share < 80% -> A; < 95% -> B; else C. Return [[sku, class]] in input order.

Why this case matters

Velocity classes drive which SKUs are slotted into forward pick areas.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
generated mix 18	`[["S03", "B"], ["S14", "B"], ["S28", "C"], ["S16", "A"], ["S23", "A"]]`	`[["S03", "B"], ["S14", "B"], ["S28", "D"], ["S16", "A"], ["S23", "A"]]`	Failed

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

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