max heap c 2b 2b

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showing results for - "max heap c 2b 2b"
Lennart
18 Nov 2017
1priority_queue <int, vector<int>, greater<int>> minHeap;
Linden
25 Jun 2017
1priority_queue <int> maxHeap; 
Jorge
10 Nov 2016
1// C++ program to show that priority_queue is by 
2// default a Max Heap 
3#include <bits/stdc++.h> 
4using namespace std; 
5
6// Driver code 
7int main () 
8{ 
9	// Creates a max heap 
10	priority_queue <int> pq; 
11	pq.push(5); 
12	pq.push(1); 
13	pq.push(10); 
14	pq.push(30); 
15	pq.push(20); 
16
17	// One by one extract items from max heap 
18	while (pq.empty() == false) 
19	{ 
20		cout << pq.top() << " "; 
21		pq.pop(); 
22	} 
23
24	return 0; 
25} 
26
Amandine
06 Sep 2016
1priority_queue <int, vector<int>, greater<int> > pq;
Moritz
08 Nov 2017
1#include <iostream>
2using namespace std;
3void max_heap(int *a, int m, int n) {
4   int j, t;
5   t = a[m];
6   j = 2 * m;
7   while (j <= n) {
8      if (j < n && a[j+1] > a[j])
9         j = j + 1;
10      if (t > a[j])
11         break;
12      else if (t <= a[j]) {
13         a[j / 2] = a[j];
14         j = 2 * j;
15      }
16   }
17   a[j/2] = t;
18   return;
19}
20void build_maxheap(int *a,int n) {
21   int k;
22   for(k = n/2; k >= 1; k--) {
23      max_heap(a,k,n);
24   }
25}
26int main() {
27   int n, i;
28   cout<<"enter no of elements of array\n";
29   cin>>n;
30   int a[30];
31   for (i = 1; i <= n; i++) {
32      cout<<"enter elements"<<" "<<(i)<<endl;
33      cin>>a[i];
34   }
35   build_maxheap(a,n);
36   cout<<"Max Heap\n";
37   for (i = 1; i <= n; i++) {
38      cout<<a[i]<<endl;
39   }
40}
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