algorithm to compute waiting time for FCFS scheduling in python

Question

Consider the following code that takes input processes and their arrival times and sort them according to FCFS algorithm, so i\'ve been thinking about algorithms to compute avg

Answer 1

process_queue[i].append(int(list1[i])

you are appending the i'th element of list1 to the process_queue list , You should note that list1[i] is not a list but an integer . and in next line you are trying to access

total_wtime += process_queue[i][1]

1st element of the process_queue[i] but it is not a 2d array

total_wtime += process_queue[i]

should work .