Problem 2063. A matrix of extroverts

Solution 383604

Submitted on 10 Jan 2014 by Michael Ryan

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Test	Status	Code Input and Output
1	Pass	%% x = magic(3); y = extroverts(x); y_c = [4.2500 4.7500 ; 5.2500 5.7500]; assert(max(max(abs(y-y_c)))<1e-9);
2	Pass	%% x = [1 2 3 ; 4 5 6]; y = extroverts(x); y_c = [3 4]; assert(max(max(abs(y-y_c)))<1e-9);
3	Pass	%% x=[magic(4) -magic(4)]; y = extroverts(x); y_c=[8.5 6.5 8.5 0 -8.5 -6.5 -8.5 8 8.5 9 1.5 -8 -8.5 -9 8.5 10.5 8.5 0 -8.5 -10.5 -8.5]; assert(max(max(abs(y-y_c)))<1e-9);
4	Pass	%% x = ones(20); y = extroverts(x); y_c = ones(19); assert(max(max(abs(y-y_c)))<1e-9);