Question: A priority queue containing characters is implemented as a heap stored in an array. The precondition states that this priority queue cannot contain duplicate elements.

A priority queue containing characters is implemented as a heap stored in an array. The precondition states that this priority queue cannot contain duplicate elements. Currently, the priority queue holds 10 elements, as shown below. What values might be stored in array positions 7–9 so that the properties of a heap are satisfied?

pq.items.elements Z [0] [1] [2] [3] [4] [5] [6] [7] [8] [9]

pq.items.elements Z [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] F J E B G H ? ? ?

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