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Balanced odd radix encoding: zero digit representation · case 02

The exact balanced odd radix encoding result violates the stated contract at zero digit representation.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Input [integer, odd radix>=3]; return least-significant-first balanced digits between -(base//2) and base//2, zero=[0]. Bounds: |integer|<=100 and radix<=9.

Why this case matters

Exact discrete arithmetic with observable algorithmic state; no floating point approximation is used.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
explicit oracle 0	`[]`	`[0]`	Failed

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