There are situations where a given heap tree stored needs modification. Suppose you want to erase any node from the heap - be it the root or any sub-tree node. The challenge is to rebuild the heap...

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Extracted text: There are situations where a given heap tree stored needs modification. Suppose you want to erase any node from the heap - be it the root or any sub-tree node. The challenge is to rebuild the heap tree after this modification. The kernel of the program aside from the erase function, are found in the "Bubble-Up" or Bubble-Down" algorithm affecting the chain of heap tree nodes after the deletion.