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bst.cpp
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#include <iostream>
using namespace std;
class BST {
int data;
BST *left, *right;
public:
BST();
BST(int);
BST* Insert(BST*, int);
void Inorder(BST*);
};
BST ::BST()
: data(0)
, left(NULL)
, right(NULL)
{
}
BST ::BST(int value)
{
data = value;
left = right = NULL;
}
BST* BST ::Insert(BST* root, int value)
{
if (!root) {
return new BST(value);
}
if (value > root->data) {
root->right = Insert(root->right, value);
}
else if (value < root->data){
root->left = Insert(root->left, value);
}
return root;
}
void BST ::Inorder(BST* root)
{
if (!root) {
return;
}
Inorder(root->left);
cout << root->data << endl;
Inorder(root->right);
}
int main()
{
BST b, *root = NULL;
root = b.Insert(root, 50);
b.Insert(root, 30);
b.Insert(root, 20);
b.Insert(root, 40);
b.Insert(root, 70);
b.Insert(root, 60);
b.Insert(root, 80);
b.Inorder(root);
return 0;
}