=====is_heap=====
Syntax:

<code>
    #include <algorithm>
    bool is_heap(iterator start, iterator end);
    bool is_heap(iterator start, iterator end, StrictWeakOrdering cmp);
</code>

The [[is_heap]]() function returns true if the given range [start,end) is a heap.

If the strict weak ordering comparison function object cmp is given, then it is
used instead of the < operator to compare elements.

is_heap() runs in [[/complexity|linear time]].

Related Topics: [[make_heap]], [[pop_heap]], [[push_heap]], [[sort_heap]]