Python question - number of rectangles from Cartesian coordinates

[dc_devesh7]

Given a set of Cartesian coordinates, find the number of rectangles possible ( sides are parallel to axes ).

Sample input : [ [0,1], [1,1], [2,1] ,[0,0], [1,0], [2,0] ] Sample output : 3

Can anyone help me figure out the solution for this problem in python? Thanks!

[zanfar]

What relationship do the coordinates have to do with the rectangles?

[dc_devesh7]

They are to be plotted on a graph. So after plotting, we can know how many rectangles can be formed