3.Provide a generic Java class named SortedPriorityQueue that implements a priority queue using a sorted list implemented with the Java ArrayList class. Make the implementation as efficient as possible.

4. Consider the following sorting algorithm that uses the class you wrote in the previous problem:

void sort(int[] array)

{

SortedPriorityQueue queue = new SortedPriorityQueue();

for (int i = 0; i < array.length; i++)

queue.add(array[i]);

for (int i = 0; i < array.length; i++)

array[i] = queue.remove();

}

Analyze its execution time efficiency in the worst case. In your analysis you may ignore the possibility that the array list may overflow and need to be copied to a larger array. Indicate whether this implementation is more or less efficient than the one that uses the Java priority queue.