Nov 25, 2009 · begin() is the index of that element, which may be equal to value or larger, if value is not in the sorted vector. – Max. Feb 3, 2019 at 5:11.

Nov 22, 2012 · Use STL distance, namely std::distance(set.begin(), mySetIterator). Please note that: Returns the number of elements between first and last.

Nov 9, 2009 · first //points to element 20 already in set. If the element is newly inserted than pair::first will point to the position of new element in set.

Jul 12, 2011 · You say set, but your code actually indicates list. The two are not the same. Sets are designed to have their elements retrieved by their value.

Feb 25, 2019 · It is possible to augment a (balanced) search tree with extra information that can be used to implement searching by index in logarithmic ...

Aug 27, 2009 · Finding the max element is constant time, yes, but populating the set is not, since it's sorting at insert. A unordered_set has constant time ...

Mar 1, 2017 · It's easy to write a contains(set, element) free function using the public interface of the set. Therefore, the set's interface is functionally ...