#ifndef BITREE_H
#define BITREE_H
#include<sstream>


class BiTree
{
public:
    int data;
    BiTree* left;
    BiTree* right;


    static bool is_empty(BiTree* bt);
    static bool is_leaf(BiTree* bt);
    static int sum_leaf(BiTree* bt);
    static BiTree* createNode(int data);
    static void insertNode(BiTree*& bt, int value);
    std::string toString();
};


#endif //BITREE_H