Roster changes
Your task
A club compares this season's roster with last season's to announce arrivals and departures together. Given last_year and this_year, two lists of player names (no duplicates within a list), return every name that appears in exactly ONE of the two lists, sorted alphabetically. Example: last_year ["ava", "raj", "mia"] and this_year ["raj", "zoe"] give ["ava", "mia", "zoe"].
Examples
roster_changes(last_year: list[str], this_year: list[str]) -> list[str]Example 1
Input
roster_changes(["ava", "raj", "mia"], ["raj", "zoe"])Output
["ava", "mia", "zoe"]