Cody

Solution 2080908

Submitted on 5 Jan 2020
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test Status Code Input and Output
1   Pass
x = spdiags([1 2 3;4 5 6;7 8 9]); assert(isequal(spdiags(inv_spdiags(x)),x))

2   Fail
b = spdiags(eye(10)); assert(isequal(spdiags(inv_spdiags(b)),b))

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side. Error in inv_spdiags (line 4) C(n-k,:)=diag(B,k)'; Error in Test2 (line 2) assert(isequal(spdiags(inv_spdiags(b)),b))

3   Fail
x = spdiags([1 2 3;4 5 6]); assert(isequal(spdiags(inv_spdiags(x)),x))

Assertion failed.

4   Pass
y = spdiags(magic(9)); assert(isequal(spdiags(inv_spdiags(y)),y))

5   Pass
x = spdiags(magic(5)); assert(isequal(spdiags(inv_spdiags(x)),x))

6   Pass
z = spdiags(ones(10)); assert(isequal(spdiags(inv_spdiags(z)),z))

7   Pass
x = spdiags(randi(10,5)); assert(isequal(spdiags(inv_spdiags(x)),x))

8   Pass
x = spdiags(randi(5,[3 2])); assert(isequal(spdiags(inv_spdiags(x)),x))

9   Fail
a = spdiags(zeros(5)); assert(isequal(spdiags(inv_spdiags(a)),a))

Output argument "C" (and maybe others) not assigned during call to "inv_spdiags". Error in Test9 (line 2) assert(isequal(spdiags(inv_spdiags(a)),a))