InterviewBit Problems   Perfect Peak of Array : Unsolved

About the Perfect Peak of Array : Unsolved category (1)
Partially Correct Answer for go code (1)
Why solution using mergesort is not considered ,it gives you 0(log n)? (2)
Why is this not giving correct output? (1)
Easy O(n) Code C++ (1)
Not passing all test cases (1)
Why it is partially correct can anybody explain (2)
Why partially correct ? (using preGreater and rightMin vector) (1)
Whats wrong in below code (2)
Why Partially Correct Solution? (2)
Very very very easy to understand c++ solution (2)
Partially correct solution (2)