C++ Programming: Program Design Including Data Structures
COS assignment 2 solution with source code and link to the zipped files.
Create a C++ program that will display a binary search tree: inorder traversal, preorder traversal, postorder traversal and height of the tree. The nodes of the binary search tree will be read into the code using a text file....
//Add your student name and student number
//
//
//
using namespace std;
class TreeNode
{
//keep this class as is
public:
int value; //key or data
TreeNode* left;
TreeNode* right;
//constructors
TreeNode() {
value = 0;
left = NULL;
right = NULL;
} //default constructor
TreeNode(int v) {
value = v;
left = NULL;
right = NULL;
} //parametrized constructor
}; //TreeNode
class BST
{
public:
TreeNode* root;
//member functions
BST() {
root = NULL;
, }
bool isTreeEmpty()
{
if (root == NULL)
return true; //the tree is empty
else
return false; //the tree is not empty
}
void insertNode(TreeNode* new_node) {
if (root == NULL) {
root = new_node;
} //insert the root node
else {
TreeNode* temp = root;
while (temp != NULL) {
if (new_node->value == temp->value) {
cout << "Value Already exist," <<
"Insert another value!" << endl;
return;
}
else if ((new_node->value < temp->value) && (temp->left == NULL)) {
temp->left = new_node; //insert value to the left
break;
}
else if (new_node->value < temp->value) {
temp = temp->left;
}
else if ((new_node->value > temp->value) && (temp->right == NULL)) {
temp->right = new_node; //insert value to the right
break;
}
else {
temp = temp->right;
}
}
}
} //insertNode
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