Cody

Problem 589. Matrix indexing with two vectors of indices

Solution 1943244

Submitted on 19 Sep 2019 by Chompo40
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Test Suite

Test Status Code Input and Output
1   Pass
M = rand(4); a = [4 3 2 1]; b = [1 2 3 4]; v_correct = M([4 7 10 13]); assert(isequal(twoIndex(M,a,b),v_correct))

x = 0.2261 v = 0.2261 x = 0.4425 v = 0.2261 0.4425 x = 0.0291 v = 0.2261 0.4425 0.0291 x = 0.2469 v = 0.2261 0.4425 0.0291 0.2469

2   Pass
M = rand(4); a = [3 3 1 3]; b = [1 1 3 1]; v_correct = M([3 3 9 3]); assert(isequal(twoIndex(M,a,b),v_correct))

x = 0.6778 v = 0.6778 x = 0.6778 v = 0.6778 0.6778 x = 0.5893 v = 0.6778 0.6778 0.5893 x = 0.6778 v = 0.6778 0.6778 0.5893 0.6778

3   Pass
M = rand(100); [a,b] = size(M); v_correct = M(end); assert(isequal(twoIndex(M,a,b),v_correct))

x = 0.1273 v = 0.1273

4   Pass
M = rand(100); a = []; b = []; assert(isempty(twoIndex(M,a,b)))

5   Pass
M = 1; a = [1 1 1 1 1]; b = [1 1 1 1 1]; v_correct = [1 1 1 1 1]; assert(isequal(twoIndex(M,a,b),v_correct))

x = 1 v = 1 x = 1 v = 1 1 x = 1 v = 1 1 1 x = 1 v = 1 1 1 1 x = 1 v = 1 1 1 1 1