Skip to main content

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

5
  • I am not getting your algorithm . Can you explain the term "forward-only iterator" and how this "forward only iteration " traverse the tree ? Commented Aug 14, 2014 at 16:50
  • @sdream I think his idea is basically the equivalence of: [1] Having a visitor that visits each node BFS style. [2] Keep a tmp value that holds the lowest value that has been seen [3] Find the min value in the tree that is greater than tmp [4] swap the min value with the value currently has in the visitor's node [5] move the visitor to next node [6] update the tmp value [7] repeat finding new min value that is greater than new tmp, don't forget to skip over nodes already visited by BFS visitor.
    – InformedA
    Commented Aug 14, 2014 at 17:26
  • @sdream: See edit.
    – david.pfx
    Commented Aug 15, 2014 at 5:54
  • @randomA: Right idea, wrong algorithm. See edit. But yours might work too.
    – david.pfx
    Commented Aug 15, 2014 at 5:55
  • @randomA: What you described is a Selection sort. Simple and often good enough, but Insertion sort is usually faster.
    – david.pfx
    Commented Aug 16, 2014 at 7:34