Cody

Problem 11. Back and Forth Rows

Solution 403888

Submitted on 13 Feb 2014 by Joyce
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Test Suite

Test Status Code Input and Output
1   Pass
n = 4; a = [ 1 2 3 4; 8 7 6 5; 9 10 11 12; 16 15 14 13]; assert(isequal(a,back_and_forth(n)));

st = 1 last = 4 A = 1 2 3 4 b = 1 2 3 4 st = 5 last = 8 A = 5 6 7 8 b = 1 2 3 4 5 6 7 8 b = 1 2 3 4 8 7 6 5 st = 9 last = 12 A = 9 10 11 12 b = 1 2 3 4 8 7 6 5 9 10 11 12 st = 13 last = 16 A = 13 14 15 16 b = 1 2 3 4 8 7 6 5 9 10 11 12 13 14 15 16 b = 1 2 3 4 8 7 6 5 9 10 11 12 16 15 14 13 st = 17

2   Pass
%% n = 5; a = [ 1 2 3 4 5; 10 9 8 7 6; 11 12 13 14 15; 20 19 18 17 16; 21 22 23 24 25]; assert(isequal(a,back_and_forth(n)));

st = 1 last = 5 A = 1 2 3 4 5 b = 1 2 3 4 5 st = 6 last = 10 A = 6 7 8 9 10 b = 1 2 3 4 5 6 7 8 9 10 b = 1 2 3 4 5 10 9 8 7 6 st = 11 last = 15 A = 11 12 13 14 15 b = 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 st = 16 last = 20 A = 16 17 18 19 20 b = 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 16 17 18 19 20 b = 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 20 19 18 17 16 st = 21 last = 25 A = 21 22 23 24 25 b = 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 20 19 18 17 16 21 22 23 24 25 st = 26

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