Heap


Yes, it's a complete binary tree that always stores minimum element at the root.
Here is the jar file of a heap of integers for you to download. You must have java to run it (just double clicking on it after download).

This demonstration is implemented by the 2nd year (2003-2004)

The source files used for this program are:
 

The screenshot will look like below. You have the option to add or remove an integer.