यह ट्रीप को लागू करने के लिए एक C++ प्रोग्राम है। ट्रैप डेटा संरचना मूल रूप से एक यादृच्छिक बाइनरी सर्च ट्री है। यहां, हम इस पर इन्सर्ट, डिलीट और सर्च ऑपरेशंस पर विचार करेंगे।
कार्य और विवरण
| बाएं घुमाने के लिए RotLeft() फ़ंक्शन करें | पहले पेड़ को घुमाएं फिर नई जड़ सेट करें। |
| सही घुमाने के लिए रोटराइट () फ़ंक्शन करें | पहले पेड़ को घुमाएं फिर नई जड़ सेट करें। |
फ़ंक्शन insetNod () किसी दी गई कुंजी को ट्रैप में प्राथमिकता के साथ पुनरावर्ती रूप से सम्मिलित करने के लिए -
If root = nullptr return data as root. If given data is less then root node, Insert data in left subtree. Rotate left if heap property violated. else Insert data in right subtree. Rotate right if heap property violated.
फंक्शन सर्चनोड () ट्रैप में कुंजी खोजने के लिए पुनरावर्ती -
If key is not present return false. If key is present return true. If key is less than root, search in left subtree. Else search in right subtree.
फंक्शन डिलीटनोड () ट्रैप से कुंजी को पुनरावर्ती रूप से हटाने के लिए -
If key is not present return false If key is present return true. If key is less than root, go to left subtree. Else Go to right subtree. If key is found: node to be deleted which is a leaf node deallocate the memory and update root to null. delete root. node to be deleted which has two children if left child has less priority than right child call rotLeft() on root recursively delete the left child else call rotRight() on root recursively delete the right child node to be deleted has only one child find child node deallocate the memory Print the result. End
उदाहरण
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
struct TreapNod { //node declaration
int data;
int priority;
TreapNod* l, *r;
TreapNod(int d) { //constructor
this->data = d;
this->priority = rand() % 100;
this->l= this->r = nullptr;
}
};
void rotLeft(TreapNod* &root) { //left rotation
TreapNod* R = root->r;
TreapNod* X = root->r->l;
R->l = root;
root->r= X;
root = R;
}
void rotRight(TreapNod* &root) { //right rotation
TreapNod* L = root->l;
TreapNod* Y = root->l->r;
L->r = root;
root->l= Y;
root = L;
}
void insertNod(TreapNod* &root, int d) { //insertion
if (root == nullptr) {
root = new TreapNod(d);
return;
}
if (d < root->data) {
insertNod(root->l, d);
if (root->l != nullptr && root->l->priority > root->priority)
rotRight(root);
} else {
insertNod(root->r, d);
if (root->r!= nullptr && root->r->priority > root->priority)
rotLeft(root);
}
}
bool searchNod(TreapNod* root, int key) {
if (root == nullptr)
return false;
if (root->data == key)
return true;
if (key < root->data)
return searchNod(root->l, key);
return searchNod(root->r, key);
}
void deleteNod(TreapNod* &root, int key) {
//node to be deleted which is a leaf node
if (root == nullptr)
return;
if (key < root->data)
deleteNod(root->l, key);
else if (key > root->data)
deleteNod(root->r, key);
//node to be deleted which has two children
else {
if (root->l ==nullptr && root->r == nullptr) {
delete root;
root = nullptr;
}
else if (root->l && root->r) {
if (root->l->priority < root->r->priority) {
rotLeft(root);
deleteNod(root->l, key);
} else {
rotRight(root);
deleteNod(root->r, key);
}
}
//node to be deleted has only one child
else {
TreapNod* child = (root->l)? root->l: root->r;
TreapNod* curr = root;
root = child;
delete curr;
}
}
}
void displayTreap(TreapNod *root, int space = 0, int height =10) { //display treap
if (root == nullptr)
return;
space += height;
displayTreap(root->l, space);
cout << endl;
for (int i = height; i < space; i++)
cout << ' ';
cout << root->data << "(" << root->priority << ")\n";
cout << endl;
displayTreap(root->r, space);
}
int main() {
int nums[] = {1,7,6,4,3,2,8,9,10 };
int a = sizeof(nums)/sizeof(int);
TreapNod* root = nullptr;
srand(time(nullptr));
for (int n: nums)
insertNod(root, n);
cout << "Constructed Treap:\n\n";
displayTreap(root);
cout << "\nDeleting node 8:\n\n";
deleteNod(root, 8);
displayTreap(root);
cout << "\nDeleting node 3:\n\n";
deleteNod(root, 3);
displayTreap(root);
return 0;
} आउटपुट
Constructed Treap: 1(12) 2(27) 3(97) 4(46) 6(75) 7(88) 8(20) 9(41) 10(25) Deleting node 8: 1(12) 2(27) 3(97) 4(46) 6(75) 7(88) 9(41) 10(25) Deleting node 3: 1(12) 2(27) 4(46) 6(75) 7(88) 9(41) 10(25)