Adds the element to the end of the heap without ensuring the heap condition.
Adds the element to the end of the heap without ensuring the heap condition.This function has a time complexity of O(1).
This function together with pblHeapConstruct() can be used to build a heap with N elements in time proportional to N.
First create an empty heap with pblHeapNew() and ensure the heap has space for N elements via a call to pblHeapEnsureCapacity(), then add all elements via calls to this function and finally ensure the heap condition with a call to pblHeapConstruct().