0613. Shortest Distance in a Line
https://leetcode.com/problems/shortest-distance-in-a-line
Description
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.
The shortest distance is '1' obviously, which is from point '-1' to '0'. So the output is as below:
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?
ac
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