Longest Run of Open Parking Bays

PandasMediumMid level~10 min

Problem

You are given a DataFrame `parkingbays` (CSV `parkingbays.csv`) with columns bay_no (the position along a parking row) and is_open (1 when the bay is open, 0 when it is taken). Bay numbers are not necessarily contiguous. Find the longest stretch of consecutive open bays — a run is broken whenever a bay is taken or a bay number is missing. If several stretches tie for the longest length, return each of them. Output columns: `start_bay`, `end_bay`, and `run_length`, ordered by `start_bay`.

Input data

Example rows — the live problem includes the full dataset.

parkingbays

bay_no	is_open
1	1
2	0
3	1
4	1
5	1

Expected output

Your answer should return 1 row with the columns start_bay, end_bay, run_length.

Starter code (Pandas (Python))

import pandas as pd

def longest_run_of_open_parking_bays(parkingbays) -> pd.DataFrame:
    # Your code here
    return parkingbays

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