Your objective is to complete a function createSpiral(N)
that receives an integer N
and returns an NxN
two-dimensional array with numbers 1
through NxN
represented as a clockwise spiral.
Return an empty array if N < 1
or N
is not int / number
Examples:
N = 3
Output: [[1,2,3],[8,9,4],[7,6,5]]
1 2 3
8 9 4
7 6 5
N = 4 Output: [[1,2,3,4],[12,13,14,5],[11,16,15,6],[10,9,8,7]]
1 2 3 4
12 13 14 5
11 16 15 6
10 9 8 7
N = 5 Output: [[1,2,3,4,5],[16,17,18,19,6],[15,24,25,20,7],[14,23,22,21,8],[13,12,11,10,9]]
1 2 3 4 5
16 17 18 19 6
15 24 25 20 7
14 23 22 21 8
13 12 11 10 9
This challenge comes from alex.budiakov on CodeWars. Thank you to CodeWars, who has licensed redistribution of this challenge under the 2-Clause BSD License!
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