1037-valid-boomerang.py

"""
Problem Link: https://leetcode.com/problems/valid-boomerang/

A boomerang is a set of 3 points that are all distinct and not in a straight line.

Given a list of three points in the plane, return whether these points are a boomerang.

Example 1:
Input: [[1,1],[2,3],[3,2]]
Output: true

Example 2:
Input: [[1,1],[2,2],[3,3]]
Output: false
 
Note:
points.length == 3
points[i].length == 2
0 <= points[i][j] <= 100
"""
class Solution(object):
    def isBoomerang(self, points):
        """
        :type points: List[List[int]]
        :rtype: bool
        """
        return (points[0][0] - points[1][0]) * (points[0][1] - points[2][1]) != (points[0][0] - points[2][0]) * (points[0][1] - points[1][1])