EasyCalculusca-016

Arc Length of a Polyline

Problem

Compute the total length of a polyline through consecutive 2D points.

Sum the Euclidean distance between each pair of adjacent points. A polyline with fewer than two points has length 0.0.

Hint

Use the Pythagorean distance sqrt(dx * dx + dy * dy) for each segment.

case 1

in: [[[0,0],[3,4]]]

expected: 5

case 2

in: [[[0,0],[1,0],[1,1],[0,1]]]

expected: 3

case 3

in: [[[0,0]]]

expected: 0

case 4

in: [[[1,1],[4,5],[4,5]]]

expected: 5

Starter codePython

def polyline_length(points):
    # points is a list of [x, y] pairs
    # Your code here
    pass

4 test cases · run your code against them in the editor