#include <iostream>
typedef struct REF2 {
int value;
REF2 * left = NULL;
REF2 * right = NULL;
}ref2;
void dodaj(ref2 *&t, int value) {
if (t == NULL) {
ref2* nowy = new ref2{ value };
t = nowy;
}
else if (value < t->value) {
dodaj(t->left, value);
}
else {
dodaj(t->right, value);
}
}
std::ostream& operator << (std::ostream& stream, ref2* &bst) {
if (bst->left != NULL) {
stream << bst->left;
}
stream << bst->value << " ";
if (bst->right != NULL) {
stream << bst->right;
}
return stream;
}
int main() {
ref2* tree = new ref2{ 5 };
dodaj(tree, 10);
dodaj(tree, 1);
dodaj(tree, 2);
std::cout << tree;
delete tree;
return 0;
}
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