https://leetcode.com/problems/climbing-stairs/

Difficulty: Easy

You are given an array coordinates, coordinates[i] = [x, y], where [x, y] represents
the coordinate of a point. Check if these points make a straight line in the XY plane.

Input: coordinates = [[1,2],[2,3],[3,4],[4,5],[5,6],[6,7]]
Output: true

Input: coordinates = [[1,1],[2,2],[3,4],[4,5],[5,6],[7,7]]
Output: false

• 2 <= coordinates.length <= 1000
• coordinates[i].length == 2
• -10^4 <= coordinates[i][0], coordinates[i][1] <= 10^4
• coordinates contains no duplicate point.

Related Topics: Array, Math, Geometry