Minimum Coordinate Gap on a Line

Easy

You are given a table named Point where each row stores one unique integer coordinate on a one-dimensional number line. Schema: Point(x) Column meaning: x: unique coordinate value Task: Compute the smallest absolute distance between any two distinct points and return it as a single value. Output requirements: Return exactly one column named shortest. Return exactly one row. Supported submission environments: SQL (SQLite 3.27.2) Pandas (Python)

Input

Point:
| x  |
|----|
| -1 |
| 0  |
| 2  |

Output

[
  {"shortest":1}
]

Explanation

The closest pair is -1 and 0, so the minimum distance is 1.

Input

Point:
| x  |
|----|
| 10 |
| 3  |
| 20 |
| 14 |
| 13 |

Output

[
  {"shortest":1}
]

Explanation

The closest pair is 13 and 14, giving distance 1.

Input

Point:
| x  |
|----|
| -8 |
| -3 |
| 5  |
| 12 |

Output

[
  {"shortest":5}
]

Explanation

Sorted values are -8, -3, 5, 12. Adjacent gaps are 5, 8, and 7, so the minimum is 5.

Constraints