Consider the pseudocode given below. The function DoSomething() takes as…
GATE · 2014 · CS · Set 3 · Computer Science & IT
Consider the pseudocode given below. The function DoSomething() takes as argument a pointer to the root of an arbitrary tree represented by the leftMostChild-rightSibling representation. Each node of the tree is of type treeNode.
typedef struct treeNode* treeptr;
struct treeNode
{
treeptr leftMostChild, rightSibling;
};
int DoSomething (treeptr tree)
{
int value=0;
if (tree != NULL) {
if (tree->leftMostChild == NULL)
value = 1;
else
value = DoSomething(tree->leftMostChild);
value = value + DoSomething(tree->rightSibling);
}
return(value);
}When the pointer to the root of a tree is passed as the argument to DoSomething, the value returned by the function corresponds to the
- A.
number of internal nodes in the tree.
- B.
height of the tree.
- C.
number of nodes without a right sibling in the tree.
- D.
number of leaf nodes in the tree.
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Correct answer: D
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