MO640 - Multiple-choice question
Which of the alternatives below is incorrect?- The null tree is not considered a PQ tree;
- To obtain the frontier of a PQ tree we have to read the tree leaves from left to right;
- Reversing the children of a P node is an equivalence transformation;
- Reversing the children of a Q node is an equivalence transformation;
- None of the above
Original idea by: Moacy Barros Correia da Silva
Translation help by: Jessica Akemi Matsuoka
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