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Heap is a data structure mostly implemented using array but much more easier to visualize as tree. Its a complete tree and all element in the tree satisfy the property that child's are smaller the then parent (in case of max heap) or opposite in case of min heap. So minimum or maximum element is at the root.
- nguptak February 20, 2013It can be used in any place where u need to keep track of max or min in a bunch of number...like priority queue.