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Apply recommended fixes from PR review

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This commit is contained in:
Madhav Goyal 2024-10-18 12:28:56 +05:30
parent 2c398308f7
commit c464cbcb17
1 changed files with 14 additions and 8 deletions
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22
cpu_scheduling_algorithms/fcfs.py
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@ -13,17 +13,23 @@ def fcfs(processes: list[tuple[int, int, int]]) -> None:
processes: list of tuples where each tuple contains the
process_id, arrival_time and burst_time of each process
>>> processes = [(1, 0, 3), (2, 2, 7), (3, 1, 4), (4, 5, 2)]
>>> fcfs(processes)
Average Waiting Time: 6.0
*---*----*-------*--
1 3 2 4
"""
n = len(processes)
processes.sort(key=lambda x: x[1])
waiting_times = [0] * n
total_processes = len(processes)
processes.sort(key=lambda process: process[1])
waiting_times = [0] * total_processes
total_waiting_time = 0
for i in range(1, n):
for i in range(1, total_processes):
waiting_times[i] = processes[i - 1][2] + waiting_times[i - 1]
total_waiting_time += waiting_times[i]
print(f"Average Waiting Time: {total_waiting_time / n}")
print(f"Average Waiting Time: {total_waiting_time / total_processes}")
"""
Printing the Gantt Chart for the processes in the FCFS order
@ -31,7 +37,7 @@ def fcfs(processes: list[tuple[int, int, int]]) -> None:
idle time respectively for each process.
"""
last_burst = 0
for i in range(n):
for i in range(total_processes):
print("-" * last_burst, end="")
print("*", end="")
last_burst = processes[i][2]
@ -39,14 +45,14 @@ def fcfs(processes: list[tuple[int, int, int]]) -> None:
print("\n", end="")
last_burst = 0
for i in range(n):
for i in range(total_processes):
print(" " * last_burst, end="")
print(f"{processes[i][0]}", end="")
last_burst = processes[i][2]
print("\n", end="")
def main():
def main() -> None:
"""
Main function to demonstrate the FCFS CPU scheduling algorithm
pass an array of (process_id, arrival_time, burst_time) to fcfs