FA-96094 / Postal address normalization / Member archive

City-state-code last line parser: any ten-digit token is taken as a code · case 04

"1110112345" is accepted as a postal code.

Member previewVariant 4 · 3 implementations · 10 checks per implementation

Case contract

Uppercase, turn commas into spaces and split. If the last token is 5 digits or 5 digits, hyphen, 4 digits it is the code and is removed. The new last token must be a state in the toy table (ZZ, QX, XJ or the spelled names ZEDLAND, QUIXOTA, XANJOR mapping to them) and at least one city token must precede it. Return [city, state code, postal code or ""] or None.

Why this case matters

Last lines are parsed from the right because city names have any number of words; a mistaken boundary moves words between city, state and code.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
ten bare digits are not a code	`["QUILLBY", "ZZ", "4440412345"]`	`null`	Failed

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

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