Array Duplicates GFG POTD (09 DECEMBER 2025)

⭐ IN THE GIVEN PROBLEM, WE NEED TO RETURN THE DUPLICATE ELEMENTS FROM THE GIVEN ARRAY. ⭐ FOR THAT WE SIMPLY USE MAP, TO STORE THE ELEMENT WITH THERE FREQUENCIES. ⭐ BASED ON THE FREQUENCY WE RETURN THE VALUES WHICH HAVE ATMOST 2 FREQUENCIES.