Common Elements of Two Sets

Write a function vector<int> commonElements(const set<int>& a, const set<int>& b) that returns every value present in both sets, in ascending order.

The test prints the returned values separated by single spaces, or the word none if the returned vector is empty.

Do NOT write a main function.

Expected Output:

2 4↵
none↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

STL ContainersSets

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