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dario.sonego@gmail.com esercizi_stringhe > ultimiTre
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Creare una nuova stringa estraendo gli ultimi 3 caratteri di una stringa s. Se la stringa รจ formata da meno di 3 caratteri, restituiamo la stringa "ERRORE".


ultimiTre("ABC") → "ABC"
ultimiTre("XX") → "ERRORE"
ultimiTre("") → "ERRORE"

...Save, Compile, Run (ctrl-enter)

String ultimiTre(String s) { }

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