What container should i choose for hall of fame?

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I have a simple question.
What container that have this characteristic:
- Unique key.
- Can be sorted according to the value.

I'm trying to implement 'Hall of Fame' section to my project.
For each entry it require a string and an integer (name and score).

What I have tried:

I tried

C++

std::map<std::string,unsigned int>

In my naively implemented map, I found that it is not sorted by the value (integer).
What should I do? should I just swapped it to become

C++

<unsigned int, std::string>

But it doesn't handle unique keys (name).
Please, teach me how.

Posted 18-Feb-16 19:57pm

Are Riff

Updated 19-Feb-16 1:26am

v2

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2 solutions

Solution 1

In my knowledge there is no such a container. A simple solution, if data size isn't huge, would be using both the containers: map<string,> (or unordered_map<string,>) and map<int,>, however then you must be sure to keep them in sync.

Posted 18-Feb-16 20:46pm

CPallini

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Aescleal · Accepted Answer · 2016-02-19T01:26:00

Solution 2

The first rule of C++ standard library use is grab a vector and use that. Only if that's too slow (or you don't have enough contiguous address space) do you bother reaching for another container.

So try std::vector<std::pair xmlns:std="#unknown"><std::string,>></std::pair> stirred with a judicious use of std::sort and std::find to order your values and find specific values.

Posted 19-Feb-16 1:26am

Aescleal

Comments

Richard MacCutchan 19-Feb-16 8:40am

Sage advice; I must try to remember it.

Are Riff 19-Feb-16 11:00am

thanks, it's simple, back to basic, and working.