Hackerrank - Compute the Perimeter of a Polygon

Hackerrank - Problem Statement A description of the problem can be found on Hackerrank. Solution Calculate a length of a line between each pair of following points p, defined with x and y coordinate: (p0, p1), (p1, p2), ..., (pn-1, p0) Length of a line between two points: Make sum of the lengths. I created […]

Hackerrank - Compute the Area of a Polygon

Hackerrank - Problem Statement A description of the problem can be found on Hackerrank. Solution Create matrices of point pairs as follows

... Calculate the determinat of each matrix: x1 * y2 - x2 * y1 And sum the determinants. In the end divide the sum with 2. Solution based on this. I […]