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c++ Programming Glossary: multimapwhat are the fast algorithms to find duplicate elements in a collection and group them? http://stackoverflow.com/questions/1332527/what-are-the-fast-algorithms-to-find-duplicate-elements-in-a-collection-and-grou the data structure say if it's a pre sorted one like std multimap Updates To make things clearer as suggested. there's one constraint.. comparisons. Using a pre sorted container like multiset multimap is not better according to my test since the sorting while inserting.. to be the higher cost operation in your scenario. Using a multimap and retaining the previous element in the final iteration to..
Sorting a std::map by value before output & destroy http://stackoverflow.com/questions/1367429/sorting-a-stdmap-by-value-before-output-destroy I'm trying different solutions as going through a multimap to allow duplicate keys but I'd like to know if there is a more..
how does the stl's multimap insert respect orderings? http://stackoverflow.com/questions/1595270/how-does-the-stls-multimap-insert-respect-orderings does the stl's multimap insert respect orderings I have some data which come with a.. of the data and iterate through it. This sounds like std multimap is just what I need. However I also need data with the same.. data I get to the earlier data before the later data. Does multimap do this I haven't found any guarantees that this is the case...
What are the Complexity guarantees of the standard containers? http://stackoverflow.com/questions/181693/what-are-the-complexity-guarantees-of-the-standard-containers Multiple Associative Container Forward Container std multimap Sorted Pair Multiple Associative Container Forward Container..
multiset, map and hash map complexity http://stackoverflow.com/questions/222658/multiset-map-and-hash-map-complexity theory big o share improve this question map set multimap and multiset These are implemented using a red black tree a.. n Lookup O log n Deletion O log n hash_map hash_set hash_multimap and hash_multiset These are implemented using hash tables ...
stl::multimap - how do i get groups of data? http://stackoverflow.com/questions/247818/stlmultimap-how-do-i-get-groups-of-data multimap how do i get groups of data Multimap essentially has groups.. and get their aggregate values. For example in a std multimap string int I store Group1 1 Group1 2 Group1 3 Group2 10 Group2.. stored these values I should be able to iterate this multimap and get the aggregate values of each group . Problem is there..
Do STL iterators guarantee validity after collection was changed? http://stackoverflow.com/questions/3329956/do-stl-iterators-guarantee-validity-after-collection-was-changed
General use cases for C++ containers http://stackoverflow.com/questions/4010097/general-use-cases-for-c-containers the C standard library containers bitset deque list map multimap multiset priority_queue queue set stack vector For example a..
Rules for Iterator Invalidation http://stackoverflow.com/questions/4114503/rules-for-iterator-invalidation over STL container classes Vector Dequeue list map multimap set multiset . Is it possible to categorize and sum up some..
Why was pair range access removed from C++11? http://stackoverflow.com/questions/6167598/why-was-pair-range-access-removed-from-c11 Iter Iter const x return iter_pair_range Iter x int main multimap int int mm ... for auto p as_range mm.equal_range 42 ... untested..
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