Binary heap: Difference between revisions

Revision as of 14:47, 1 April 2004

Revision as of 04:26, 13 April 2004

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[[de:Binärer Heap]][[pl:Kopiec (informatyka)]]

'''Binary heaps''' are a particular kind of [[heap]] that only has two children. Binary heaps are commonly represented by [[array]]s of values. For example, the root of the tree could be item 10 in the array, and the children of item ''n'' are the items at 2''n''+1 and 2''n''+2; so item 0's children are items 1 and 2, 1's children are items 3 and 4, etc. This allows you to regard any 1-based array as a possibly-screwed-up heap.

The diagram on the left is somewhat deceptive in that heaps are conventionally in decreasing order rather than increasing order because of their use as [[priority queue]]s. The diagram on the right is a more traditional heap.