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| #include <iostream>
#include <iomanip>
#include <locale>
using namespace std;
struct TreeNode
{
int data;
TreeNode *left,
*right;
};
class Tree
{
private:
TreeNode *root,
*next;
public:
Tree()
{
root = NULL;
}
void addToTreeHelper(int const value)
{
addToTree(&root, value);
}
void addToTree(TreeNode **Ptr, int const value)
{
if((*Ptr )== NULL)
{
(*Ptr) = new TreeNode;
(*Ptr) -> data = value;
(*Ptr) -> left = (*Ptr) -> right = NULL;
}
else
{
if(value < (*Ptr) -> data)
addToTree(&(*Ptr) -> left, value);
else if(value > (*Ptr) -> data)
addToTree(&(*Ptr) -> right, value);
else
wcout << L"Дубликат!\n";
}
}
void showTreeHelper()
{
if(root == NULL)
wcout << L"Дереов пустое!\n";
else
showTree(root);
}
void showTree(TreeNode *Ptr)
{
if(Ptr != NULL) //обход дерева в ширину
{
wcout << Ptr -> data << " ";
showTree(Ptr -> left);
showTree(Ptr -> right);
}
}
void deleteTreeHelp(int const value)
{
deleteTree(root, value);
}
void deleteTree(TreeNode *Ptr, int const value)
{
TreeNode *parent = NULL;
TreeNode *removed = NULL;
while(Ptr != NULL && Ptr -> data != value)
{
parent = Ptr;
if(Ptr -> data > value)
Ptr = Ptr -> left;
else
Ptr = Ptr -> right;
}
int peremen = Ptr -> data;
if(root != NULL)
{
TreeNode *child = NULL;
if(Ptr -> left == NULL || Ptr -> right == NULL)
{
/*случай когда один ребенок*/
if(Ptr -> left == NULL)
child = Ptr -> right;
else
child = Ptr -> left;
/*усли удаляем корень с одним потомком*/
if(root -> data == value)
root = child;
else
{
if(parent -> left == Ptr)
parent -> left = child;
else
parent -> right = child;
}
removed = Ptr;
}
else /*if(Ptr -> left != NULL || Ptr -> right != NULL)*/
{
/*случай когда 2 ребенка*/
TreeNode *mostLeft = Ptr -> right;
while(mostLeft -> left != NULL)
{
parent = mostLeft;
mostLeft = mostLeft -> left;
}
if(root -> data == value){
removed = mostLeft;
if(parent -> left == mostLeft)
parent -> left = NULL;
else
parent -> right = NULL;
root -> data = mostLeft -> data;
}
else
{
removed = mostLeft;
if(Ptr -> left == mostLeft)
Ptr -> left = NULL;
else
Ptr -> right = NULL;
Ptr -> data = mostLeft -> data;
}
}
}
delete removed;
}
void outputHelper(int totalSpace)
{
outputTree(root, totalSpace);
}
void outputTree(TreeNode *Ptr, int totalSpace)
{
while(Ptr != NULL)
{
outputTree(Ptr -> right, totalSpace + 5);
for(int i = 1; i <= totalSpace; i++)
cout << " ";
cout << Ptr -> data << "\n";
Ptr = Ptr -> left;
totalSpace += 5;
}
}
int getMaxDepthHelper()
{
return getMaxDepth(root, 0);
}
int getMaxDepth(TreeNode *Ptr, int depth) {
if (Ptr == NULL)
return depth;
return max(getMaxDepth(Ptr->left, depth + 1), getMaxDepth(Ptr->right, depth + 1));
}
};
void instructions();
void menu();
int _tmain(int argc, _TCHAR* argv[])
{
wcout.imbue(locale(".866"));
wcin.imbue(locale(".866"));
menu();
cout << "\n\n";
return 0;
}
void instructions()
{
wcout << L"Выберите пункт меню: " <<
L"\n1 - Добавить элемент" <<
L"\n2 - Удалить элемент" <<
L"\n3 - Вывод дерева" <<
L"\n4 - Максимальная длинна дерева" <<
L"\n5 - Выход.\n";
}
void menu()
{
Tree Universal;
int punkt_menu, value, space = 0;
instructions();
do{
wcout << L"\n? ";
cin >> punkt_menu;
switch(punkt_menu)
{
case 1:
wcout << L"Введите число: ";
cin >> value;
Universal.addToTreeHelper(value);
break;
case 2:
wcout << L"Введите значение удаляемого элемента: ";
cin >> value;
Universal.deleteTreeHelp(value);
case 3:
wcout << L"Вывод дерева:\n\n";
Universal.outputHelper(space);
break;
case 4:
wcout << L"Длина дерева: " <<
Universal.getMaxDepthHelper();
break;
}
}while(punkt_menu != 5);
} |
(
