Closest Mileposts on a Trail

PandasEasyJunior level~10 min

Problem

A `Milepost` DataFrame lists the unique integer `position` of each marker along a straight trail. Report the shortest distance between any two markers, in a single column `nearest`.

Input data

Example rows — the live problem includes the full dataset.

milepost

position
5
12
9
30

Expected output

Your answer should return 1 row with the columns nearest.

Starter code (Pandas (Python))

import pandas as pd

def closest_mileposts(milepost: pd.DataFrame) -> pd.DataFrame:
    # Your code here
    return milepost

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