Suppose we are given an n×n grid, some of whose cells are marked; the grid is represented by an array m[1 .. n,1 .. n] of booleans, where m[i, j] = true if and only if cell (i, j) is marked. a monotone path through the grid starts at the top-left cell, moves only right or down at each step, and ends at the bottom-right cell. our goal is to cover the marked cells with as few monotone paths as possible.

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.

The managing director of a company sends a christmas greeting to all his employees through the company email. which type of network does he use? he uses an .

What are "open-loop" and "closed-loop" systems