By using the Max-Heap data structure to implement a priority queue, some applica

Question

By using the Max-Heap data structure to implement a priority queue, some applications may need to change the data (priority) of a specific node i. That is, given an index i, change the priority of node i to a new priority t. Please write a pseudocode for this procedure.

Max-Heap-update(A, i, t) {

}

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Given an array A, we try to sort the array using the quicksort algorithm. In this sorting, assume on each recursive step the partition procedure always partition each subarray into n ? 2 to 2 ratio, where n is the size of the subarray. What

Explanation / Answer

SEARCH(A; i; j; x) _rst A[i] middle A[(i + j)=2] last A[j] if x 2 f_rst; middle; lastg: then return the corresponding index else : if (x < _rst and x > middle) or (x > _rst and x > middle): [xxx Isn

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