I'm sure you mean that push is O(1). shift and unshift can be made O(1) very easily by the space padding provided at the beginning of an array and they have 1 O(N) operation every M entries (where M, I think, is in the range of 50).

Splice is O(N) only if you require that the Perl array be optimized for random access. If you're willing to allow for disjoint arrays and do some calculations that can be a bit fiddly, then you can make splice O(1) and random access O(1) (but potentially slower than it is right now).

My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to Re^5: Array VS Linked List by dragonchild
in thread Array VS Linked List by asset

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