• 2022-06-03
    3 There is a set of data (15, 9, 7, 8, 20, - 1, 7, 4), and the initial heap created by the heap sort filtering method is ( ).
    A: -1,4,7,8,20,15,7,9
    B: -1,4,8,9,20,7,15,7
    C: -1,7,15,7,4,8,20,9
    D: None of the above options.