質問編集履歴
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文法の修正
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@@ -1,98 +1,6 @@
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```ここに言語を入力
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Node * BinaryTree::removeAll(Node *r) { //定義が不明....
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using namespace std;
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class Node {
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friend class BinaryTree;
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private:
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int data;
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Node *left;
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Node *right;
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public:
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Node(int _data);
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};
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class BinaryTree {
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private:
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Node *root;
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public:
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BinaryTree();
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~BinaryTree();
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void insertNode(int d) { root = insertNode(root, d); }
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Node *insertNode(Node *r, int d);
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void printInorder() { printInorder(root); }
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void printInorder(Node *r);
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void printPreorder() { printPreorder(root); }
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void printPreorder(Node *r);
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void printPostorder() { printPostorder(root); }
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void printPostorder(Node *r);
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Node *removeAll( Node *r );
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};
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Node::Node(int _data) {
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data = _data;
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left = NULL;
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right = NULL;
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}
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BinaryTree::BinaryTree() {
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root = NULL;
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};
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BinaryTree::~BinaryTree( ) {
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root = removeAll( root );
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};
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Node *BinaryTree::insertNode(Node *r, int d) {
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if (root == NULL) {
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root = new Node(d);
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return root;
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}
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if (r->data == d)
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return root;
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if (r->data > d) {
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if (r->left == NULL) {
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r->left = new Node(d);
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return root;
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}
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else
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return insertNode(r->left, d);
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}
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else {
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if (r->right == NULL) {
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r->right = new Node(d);
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return root;
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}
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else
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return insertNode(r->right, d);
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}
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}
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void BinaryTree::printPreorder(Node *r) {
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if (r == NULL)
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return;
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cout << r->data << " ";
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printPreorder(r->left);
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printPreorder(r->right);
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}
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void BinaryTree::printInorder(Node *r) {
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if (r == NULL)
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return;
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printInorder(r->left);
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cout << r-> data << " ";
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printInorder(r->right);
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}
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Node * BinaryTree::removeAll(Node *r) { //ここの定義が不明....
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Node *removed;
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if (root == NULL)
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return NULL;
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