Description

The rectangle is a figure with four straight sides and four right angles. Given 3 points of a rectangle in a coordinate plane, figure out the last point to make a rectangle.

v is an array, containing 3 points of a rectangle. By using v, make a solution function that returns the last point.

Constraints
  • v is an array, containing 3 points of a triangle.
  • Each of v's element has x and y coordinates, which represents a point of a rectangle.
  • In v, two points can be connected either with a vertical or horizontal line.
  • Each coordinate is a natural number, less than or equal to 1 billion.
  • Return the last point, [coordiante x, coordinate y].
Examples
v result
[[1, 4], [3, 4], [3, 10]] [1, 10]
[[1, 1], [2, 2], [1, 2]] [2, 1]

Example #1
When there are 3 points: [1, 4], [3, 4], [3, 10]
[1,10] will make a rectangle.

Example #2
When there are 3 points: [[1, 1], [2, 2], [1, 2]]
[2,1] will make a rectangle.

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