836. Rectangle overlap

A rectangle is represented as a list [x1, y1, x2, Y2], where (x1, y1) was the coordinates of its bottom-left corner, and ( x2, y2) is the coordinates of its top-right corner.

rectangles overlap if the area of their intersection is positive. To is clear, the rectangles of the only touch at the corner or edges does not overlap.

Given (axis-aligned) rectangles, return whether they overlap.

Example 1:

INPUT:REC1 = [0,0,2,2], rec2 = [1,1,3,3]
Output:true

Example 2:

INPUT:REC1 = [0,0,1,1], rec2 = [1,0,2,1]
Output:false

Notes:

Both rectangles rec1 and rec2 are lists of 4 integers.All coordinates in rectangles will be between -10^9 and 10^9.

class Solution:    def isRectangleOverlap(self, rec1, rec2):        """        :type rec1: List[int]        :type rec2: List[int]        :rtype: bool        """        return not(rec1[2]<=rec2[0] or rec1[0]>=rec2[2] or rec1[1]>=rec2[3] or rec1[3]<=rec2[1])

Draw a picture more clearly.
Think straight and think clearly when you won't intersect.

836. Rectangle overlap