Add a sorted multiset feature like cpp which will help to coding community

[elis.byberi]

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More Data Structures

Some languages have lots of data structures (e.g. Java, which has a hashed, linked, and treed/sorted version for essentially data structures). Some of them are (array)lists, dictionaries, heaps, sets, and queues. However, even basic, common data structures such as linked lists, sorted sets, sorted dictionaries, and multisets, aren’t built-in or at least in the standard library. Programs can be slow without these data structures being implemented. When implemented manually, it takes lots of time …