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613. Shortest Distance in a Line

Table point holds the x coordinate of some points on x-axis in a plane, which are all integers.

 

Write a query to find the shortest distance between two points in these points.

 

| x   |
|-----|
| -1  |
| 0   |
| 2   |

 

The shortest distance is '1' obviously, which is from point '-1' to '0'. So the output is as below:

 

| shortest|
|---------|
| 1       |

 

Note: Every point is unique, which means there is no duplicates in table point.

 

Follow-up: What if all these points have an id and are arranged from the left most to the right most of x axis?

 

Difficulty:

Easy

Lock:

Prime

Company:

Unknown

Problem Solution

613-Shortest-Distance-in-a-Line

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All contents and pictures on this website come from the Internet and are updated regularly every week. They are for personal study and research only, and should not be used for commercial purposes. Thank you for your cooperation.