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  1. //
  2. //  main.cpp
  3. //  Min Heap
  4. //
  5. //  Created by Himanshu on 02/10/21.
  6. //
  7.  
  8.  
  9. #include <iostream>
  10. #include <queue>
  11. #include <algorithm>
  12. using namespace std;
  13.  
  14. int main () {
  15.  
  16.     vector<int> minHeap = {30, 100, 25, 40};
  17.     make_heap(minHeap.begin(), minHeap.end(), greater<int>());
  18.  
  19.     cout<<"Insert H(x) {20, 70}"<<endl;
  20.     minHeap.push_back(20);
  21.     push_heap(minHeap.begin(), minHeap.end(), greater<int>());
  22.     minHeap.push_back(70);
  23.     push_heap(minHeap.begin(), minHeap.end(), greater<int>());
  24.  
  25.     cout<<"Minimum Element (H)"<<endl;
  26.     cout<<minHeap.front()<<endl;
  27.  
  28.     cout<<"Minimum Element (H) after Extract-Min (H)"<<endl;
  29.     pop_heap(minHeap.begin(), minHeap.end(), greater<int>());
  30.     minHeap.pop_back();
  31.     cout<<minHeap.front()<<endl;
  32.  
  33.     cout <<"Extracting out elements..."<<endl;
  34.     while (!minHeap.empty()) {
  35.         cout<< minHeap.front()<<" ";
  36.         pop_heap(minHeap.begin(), minHeap.end(), greater<int>());
  37.         minHeap.pop_back();
  38.     }
  39.     cout<<endl;
  40.  
  41.     if (minHeap.empty()) {
  42.         cout<<"Heap is empty"<<endl;
  43.     } else {
  44.         cout<<"Heap is not empty"<<endl;
  45.     }
  46.  
  47.   return 0;
  48. }
  49.  
  50.  
Success #stdin #stdout 0s 5500KB
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stdin
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Standard input is empty
stdout
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Insert H(x) {20, 70}
Minimum Element (H)
20
Minimum Element (H) after Extract-Min (H)
25
Extracting out elements...
25 30 40 70 100 
Heap is empty
https://ideone.com/2lOBp4
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
secret

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