Think about correctness (20 points) in class we discussed the interval scheduling problem: given a set i of jobs [s, e], where s is the start time and e > s is the end time, select a subset s of i containing a maximal number of non-overlapping jobs. (if you missed class that day, you can find examples and more discussion of this problem in section 1.2 of the text by skeina, available online through the isu library.) here is a proposed algorithm to solve this problem: start with an empty set s while i is nonempty find the job j such that the midpoint (s e) / 2 is earliest remove j from i remove all jobs from i that overlap j add j to the solution s decide whether the algorithm is correct. if you believe it is correct, give an informal explanation for why it works. if you believe it is incorrect, provide a test case on which it fails (counterexample).

Knowing that the central portion of link bd has a uniform cross sectional area of 800 mm2 , determine the magnitude of the load p for which the normal stress in link bd is 50 mpa. (hint: link bd is a two-force member.) ans: p = 62.7 kn

Consider the following function main: int main() { int alpha[20]; int beta[20]; int matrix[10][4]; . . } a. write the definition of the function inputarray that prompts the user to input 20 numbers and stores the numbers into alpha. b. write the definition of the function doublearray that initializes the elements of beta to two times the corresponding elements in alpha. make sure that you prevent the function from modifying the elements of alpha. c. write the definition of the function copyalphabeta that stores alpha into the first five rows of matrix and beta into the last five rows of matrix. make sure that you prevent the function from modifying the elements of alpha and beta. d. write the definition of the function printarray that prints any onedimensional array of type int. print 15 elements per line. e. write a c11 program that tests the function main and the functions discussed in parts a through d. (add additional functions, such as printing a two-dimensional array, as needed.)

Http is the protocol that governs communications between web servers and web clients (i.e. browsers). part of the protocol includes a status code returned by the server to tell the browser the status of its most recent page request. some of the codes and their meanings are listed below: 200, ok (fulfilled)403, forbidden404, not found500, server errorgiven an int variable status, write a switch statement that prints out the appropriate label from the above list based on status.