已知數據手機號數組：String[] phones = {"13804010040","13804010041","13804010042","13804010043","13804010044","13804010045","13804010046","13804010047","13804010044","13804010054","13804010055","13804010056","13804010058","13804010059","13804010060","13804010061","13804010062","13804010063","13804010064","13804010065","13804010066","13804010067","13804010068","13804010069","13804010070","13804010071","13804010072","13804010073","13804010074","13804010075","13804010045","13804010057","13804010063","13804010058","13804010069","13804010066"}1使用集合，快速去除重復的手機號，將去重后手機號存放的List集合中，輸出去重后有多少個手機號，13804010099這個手機號是否存在?2已知上面手機號數組，將數組轉為集合，然后使用map集合存儲每個手機號出現的次數，并遍歷輸出