/wdi_2_ruby_quiz_spiral_array

Primary LanguageRuby

Spiral Path

Write a function called "spiral" that takes an NxM array as input and returns a "spiral" path through the array, starting in the upper-left corner and moving clockwise. Use the language of your choice.

For example (in Ruby), if

array = [[1,2,3],
         [8,9,4],
         [7,6,5]]

then

spiral(array) # => [1,2,3,4,5,6,7,8,9]

It should work on any NxM array, so don't assume the input is a square array. However, every row will have the same number of elements.

Credit:

Credit and inspiration for this exercise goes to Jesse Farmer.