XOR function mappings can easily be classified by decision trees. True False

When iterating over a hierarchical data structure, such as a tree,Group of answer choices 1. Iterating must be done recursively and it must start at the root, visiting each node once. 2. Iterating must start at the children, and must be done with recursion. 3. Iterating starts at the root but can continue depth first or breadth first, and must be done recursively. 4. Iterating must start at the root and it must traverse nodes exactly once.

The benefits and disadvantages of weighted graphs against adjacency lists should be compared.

def transitiveclosure(g):     """computes the transitive closure of a graph/relation encoded as as a set of 2-tuples"""   transitiveclosure: This function should accept sets/frozensets of 2-tuples that encode relations, or equivalently, graphs, and should return the least relation that includes the input relation and is transitive: its transitive closure. E.g., an input frozenset({(1,2),(2,3)}) could correctly result in the value frozenset({(1,2),(2,3),(1,3)}).