How is Binary Heap usually implemented?

Technology CommunityCategory: Binary TreeHow is Binary Heap usually implemented?
VietMX Staff asked 3 years ago

binary heaps are commonly implemented with an array. Any binary tree can be stored in an array, but because a binary heap is always a complete binary tree, it can be stored compactly. No space is required for pointers; instead, the parent and children of each node can be found by arithmetic on array indices:

  • The root element is 0
  • Left child : (2*i)+1
  • Right child : (2*i)+2
  • Parent child : (i-1)/2

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