11. Write code to create a std::vector of customers using the default constructor. Each element represents the number of visitors per hour. Specifically, the first element contains the number of visitors in the first hour of operation, the second element for the second hour, and so on. Log the number of visitors in this order: 2, 4, 1, 4, 3, 2, 1, 1. Get the total number of times visitors were logged and store it in a variable called hours_logged. For example, if visitor counts were added to the vector twice, then hours_logged would be 2. Get the number of visitors in the fourth hour and store it in a variable called midday_visitors.

What are the values of the variable number and the vector review after the following code segment is executed?           vector<int> review(10,-1);          int number;          number = review[0];          review[1] = 150;          review[2] = 350;          review[3] = 450;          review.push_back(550);          review.push_back(650);          number += review[review.size()-1];          review.pop_back();

1) What is one main disadvantage of an ArrayList? 2) Write a Java statement to create an ArrayList called list to hold 25 integers. 3) What is the type of the ArrayList defined in question number 2? 4) Write a for loop to initialize the objects in the ArrayList created in question number 2 above to -1.

You are working for a university to maintain a list of grades and some related statistics for a student. Class and Data members: Create a class called Student that stores a student’s grades (integers) in a vector (do not use an array).  The class should have data members that store a student’s name and the course for which the grades are earned. Constructor(s): The class should have a 2-argument constructor that receives the student’s name and course as parameters and sets the appropriate data members to these values. Member Functions: The class should have functions as follows: Member functions to set and get the student’s name and course variables. A member function that adds a single grade to the vector. Only positive grades are allowed.  Call this function AddGrade. A member function to sort the vector in ascending order. A member function to compute the average (x̄) of the grades in the vector. The formula for calculating an average is x̄ = ∑xi / n  where xi is the value of each…