heap in java
In Java PriorityQueue can be used as a Heap.
Min Heap
PriorityQueue<Integer> minHeap = new PriorityQueue<>();
Max Heap:
PriorityQueue<Integer> maxHeap = new PriorityQueue<>(Comparator.reverseOrder());heap in java
In Java PriorityQueue can be used as a Heap.
Min Heap
PriorityQueue<Integer> minHeap = new PriorityQueue<>();
Max Heap:
PriorityQueue<Integer> maxHeap = new PriorityQueue<>(Comparator.reverseOrder());heap
A heap is a tree-based data structure in which all the nodes of the tree are in a specific order. For example, if is the parent node of , then the value of follows a specific order with respect to the value of and the same order will be followed across the tree.heap
void max_heapify (int Arr[ ], int i, int N)
{
int left = 2*i //left child
int right = 2*i +1 //right child
if(left<= N and Arr[left] > Arr[i] )
largest = left;
else
largest = i;
if(right <= N and Arr[right] > Arr[largest] )
largest = right;
if(largest != i )
{
swap (Arr[i] , Arr[largest]);
max_heapify (Arr, largest,N);
}
}Copyright © 2021 Codeinu
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