Second Largest with Iterator Arithmetic

Write a function int secondLargest(vector<int> v) that returns the second-largest value in v. The vector is passed BY VALUE, so sort it ascending in place with sort, then return the element two positions before end(). You may assume the vector always has at least 2 elements. Duplicates count as separate positions: for {4, 9, 9} the answer is 9.

The test prints the returned value on its own line. For {3, 7, 9, 1} it prints 7.

Do NOT write a main function.

Expected Output:

7↵
2↵

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

Hints2 available

Topics:

STL ContainersIterators

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