Tree Minimum element
Execution time limit is 1 second
Runtime memory usage limit is 128 megabytes
Binary search tree is given. Return the pointer to the minimum element.
Definition of a tree:
// Java
class TreeNode
{
public:
int val;
TreeNode left;
TreeNode right;
TreeNode(int x) {
val = x;
left = NULL;
right = NULL;
};
// C++
class TreeNode
{
public:
int val;
TreeNode *left;
TreeNode *right;
TreeNode(int x) : val(x), left(NULL), right(NULL) {}
};
Implement function Minimum that returns pointer to the element with minimum value in the tree.
// Java TreeNode Minimum(TreeNode tree)
// C++ TreeNode* Minimum(TreeNode *tree)
Example
Function Minimum returns pointer to the node with value 2 - the vertex with minimum value in the tree.
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