Data Structures & Algorithms Lecture Notes

4 December 2008 • Heaps and Priority Queues


Outline

Array-Based Trees

Binary Tree Indexing

Heaps

Heap Characteristics

Heap ADT

Other Heap Operations

Heap Data

Heap Add

Example Heap Add

Heap Remove

Example Heap Remove

Priority Queues

Heaps as Priority Queues

Sorting Again

Sorting With A Heap

Heapsort

heapsort(a[], n)

  for i = 1 to n - 1
    bubble-up(a, i)

  for i = n - 1 to 1
    swap(a[0], a[i])
    bubble-down(i)

Are They?

heapsort vs quicksort on ints

heapsort vs quicksort on points

Summary


This page last modified on 3 December 2008.

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