STL
Please can any one clear me difference between map and set in STL?
with example.
with example.
Last edited on
In a map, there is the key and the element. By using a key you get the element.
(Maps are sometimes called "associative arrays" because they're actually the general form of an array.)
As you can see, in a map the key and the element are distinct things.
And that's the difference between a map and a set.
In a set, each element is its own key.
(Maps are sometimes called "associative arrays" because they're actually the general form of an array.)
KEY ELEM
map<string, int> msi;
KEY ELEM
msi["Hello"] = 203;
msi["Car"] = 11;
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As you can see, in a map the key and the element are distinct things.
And that's the difference between a map and a set.
In a set, each element is its own key.
thanx Cafish666 for you reply.
can you please check following points are correct:-
1. List and Set contains elements in sorted order .
2. we can not change elements value from set.
3. there is also key value pair in set but in set we don't have to set key.
4. which one es more efficient?
5. Example were er should use map or set?
can you please check following points are correct:-
1. List and Set contains elements in sorted order .
2. we can not change elements value from set.
3. there is also key value pair in set but in set we don't have to set key.
4. which one es more efficient?
5. Example were er should use map or set?
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