peek
Returns the value at the top of this heap without removing it.
If the heap is empty, this method will throw an exception.
Example:
val heap = heapOf(1, 2, 3) { a, b -> a b }
require(heap.peekNext() == 3)
require(heap.peekNext() == 3)Content copied to clipboard
Return
The value at the top of this heap.
Throws
If this method was called on an empty heap.