CONTEXT: A university's computer science department employs a teaching assistant $($TA$)$

who helps undergraduate students with their programming assignments

during regular office hours. The TA's office is quite small and can only accommodate

a single desk with a chair and a computer. There are three chairs in the corridor

corridor outside the office where students can sit and wait if the TA is currently helping

another student. When no student needs help during office hours, the

office hours, the TA sits at his desk and takes a nap. If a student arrives

during office hours and finds the TA asleep, the student must wake the TA to

for help. If a student arrives and finds the TA assisting another student

student, the student sits on one of the chairs in the corridor and waits. If no chair is available

is available, the student returns later.

Using POSIX wires, mutex locks and semaphores, implement a solution that

solution that coordinates TA and student activities. Details of this work are

provided below

DETAILS: Using Java threads start by creating n students.

Each will run a separate thread. The TA will also run

as a separate thread. The students' threads will alternate between programming for a while and seeking help from the TA$.$ If the TA is available, they will

get help. If not, they'll sit on a chair in the hallway or$,$ if no chair is available

chair is available, resume programming and ask for help later.

later. If a student arrives and notices that the TA is asleep, he$/$she should inform the

using a semaphore. When the TA has finished helping a student, he$/$she should check if there are any students waiting for help in the corridor. If so$,$ the TA must help each of these students in turn. each of these students in turn. If no students are present, the TA can back to napping. Perhaps the best option for simulating the programming of students $-$ and the TA helping a student $-$ is perhaps to have the appropriate wires sleep for a random period of time. random period of time. Adjust the number of students and the programming time to make the simulation is interesting.