Create incremental spiral WITHOUT USING EVAL or FEVAL - MATLAB Cody - MATLAB Central

Problem 944. Create incremental spiral WITHOUT USING EVAL or FEVAL

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Constructions that use feval or eval are used to cheat with cody. This test-suite tries to avoid that trick.
The goal of this challenge is to create a numeric pyramid with size n*n, starting with 1 in the upper left corner, and cycling clockwise until the center, by every step incrementing with one. It is not allowed to use eval or feval statements to get a lower node-count. Neither are regexp, regexprep, regexpi, eval, evalc, evalin, nor inline allowed.
For example:
n = 3;
ans =
1 2 3
8 9 4
7 6 5
n = 6;
ans =
1 2 3 4 5 6
20 21 22 23 24 7
19 32 33 34 25 8
18 31 36 35 26 9
17 30 29 28 27 10
16 15 14 13 12 11
Solve

Solution Stats

59.09% Correct | 40.91% Incorrect
Last Solution submitted on Feb 23, 2023

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