2019-8: Going the Distance
Given a vector of (X Y) points, or a single X Y point, determine the total distance covered when travelling in a straight line from the first point to the next one, and so on until the last point, then returning directly back to the start. For example, given the points (A B C) ← (¯1.5 ¯1.5)(1.5 2.5)(1.5 ¯1.5), the distance A to B is 5, B to C is 4 and C back to A is 3, for a total of 12.
💡 Hint: The rotate X⌽Y and power X*Y functions might be useful.
Examples:
(your_function) (1 ¯1)(1 3) ⍝ from A to B and back to A
8
(your_function) (1 1)(1 2)(2 2)(2 1) ⍝ from A to B to C to D to A
4
(your_function) 5 5 ⍝ staying where we are
0
(your_function) (1 1)(3 3) ⍝ there and back again
5.656854249
your_function ←
Solutions
