Ages 15–18 · Grades 9–12 · Computer Science · Vietnamese first

LocaleForge

A person reads phở as three letters. The software reading it sees three letters — but also five bytes, and, stored a different way, more code points than letters. “How long is this word?” has more than one true answer, and picking the wrong unit is how apps mangle Vietnamese names, cut off German buttons, and sort the alphabet wrong. Read the string, predict what the software measures, then check it against the real engine.

Every answer here is computed by the same Unicode and Intl tools a shipped app uses — nothing is made up. Runs on your device; nothing leaves it.

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