Cody

Problem 589. Matrix indexing with two vectors of indices

Solution 1916381

Submitted on 30 Aug 2019 by Abbie Lund
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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))

v = [] v = 0.4471 v = 0.4471 0.0677 v = 0.4471 0.0677 0.0295 v = 0.4471 0.0677 0.0295 0.9463

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))

v = [] v = 0.9935 v = 0.9935 0.9935 v = 0.9935 0.9935 0.3808 v = 0.9935 0.9935 0.3808 0.9935

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

v = [] v = 0.2573

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

v = []

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))

v = [] v = 1 v = 1 1 v = 1 1 1 v = 1 1 1 1 v = 1 1 1 1 1