Check If Points Make a Straight Line

Easy
7
56.8% Acceptance

In this lab, you are provided with an array of points coordinates, and every element coordinates[i] represents a coordinate on a 2D plane. Your goal is to determine whether the given points make a straight line or not. To solve this, you will implement a function checkStraightLine(coordinates) that takes an array of coordinates and returns a boolean value true if the points form a straight line, and false otherwise.

Example 1:

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

Example 1

Example 2:

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

Example 2

Constraints:

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

Challenges

  1. Export the function checkStraightLine from index.js.
  2. Implement the function checkStraightLine to return true if the points form a straight line, and false otherwise.