The document provides a template for completing a heapsort function, outlining the process of converting an array into a heap and sorting it. It includes pseudocode for the reheapdown operation necessary for maintaining the heap structure. The document appears to be focused on implementing the heapsort algorithm in a programming context.

1. Complete the following heapsort function template void HeapSort (ItemType values , int
numValues) { int index; 1/ Convert the array of values into a heap. for (index = numValues /21;
index >=0; index--) ReheapDown (values, index, numValues-1); II Sort the array. for (1. { Swan
(values [0], values [ index ]); ReheapDown(values, , index-1);