This work is in C++

Really need help with these, any answer that helps will receive a thumbs up for sure

a) Write a function findPopular that prints the popular element (element with maximum frequency) in an array. (7 point) b) What is the time complexity for this problem with array that is not sorted? (3 point) a) What does the following piece of code do (assume necessary header files and namespace s are declared)? (2 point) b) What is the complexity of this code? (1 point) for (int i 0; i