is_heap() in C++

is_heap(): This function is available in the file stl_heap.h. This function checks the range of elements is in the heap or not. If the range is in the heap it will return true. Otherwise, it will return false.

Parameters: Two parameters are required for this function. 

__first – Start of range. 

__last – End of range.

Syntax:

is_heap(__first, __last)

For Example:

arr = {7,5,6,2,3,1,2}

is_heap(ar.begin(),arr.end()) = > It will return true (1)

Approach

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    vector<int> arr = {7, 5, 6, 3, 4, 1, 2};

    cout << is_heap(arr.begin(), arr.end()) << "\n";

    return 0;
}