Leetcode - check-if-it-is-a-straight-line
https://leetcode.com/problems/check-if-it-is-a-straight-line/
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
1 2 3 4 5 6 7 8 9 10 11 | # @param {Integer[][]} coordinates# @return {Boolean}def check_straight_line(points) k = (points[1][1] - points[0][1]).to_f / (points[1][0] - points[0][0]).to_f for i in 2..points.length-1 tmp_k = (points[i][1] - points[i-1][1]).to_f / (points[i][0] - points[i-1][0]).to_f return false if tmp_k != k end return trueend |
1 2 3 4 5 6 7 8 9 10 11 | func checkStraightLine(points [][]int) bool { k := float64(points[1][1] - points[0][1]) / float64(points[1][0] - points[0][0]) for i := 2; i < len(points); i++ { tmpK := float64(points[i][1] - points[i-1][1]) / float64(points[i][0] - points[i-1][0]) if tmpK != k { return false } } return true} |
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