Cody

Problem 761. Create a matrix X, where each column is a shifted copy of the vector v

Solution 2043857

Submitted on 3 Dec 2019
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Test Suite

Test Status Code Input and Output
1   Fail
x = (1:5)'; y_correct = [1 5 4 3 2;2 1 5 4 3;3 2 1 5 4;4 3 2 1 5;5 4 3 2 1]; assert(isequal(shifted(x),y_correct))

y = 1 2 3 4 5 2 1 2 3 4 3 2 1 2 3 4 3 2 1 2 5 4 3 2 1

Assertion failed.

2   Fail
x = (1:3)'; y_correct = [1 3 2;2 1 3;3 2 1]; assert(isequal(shifted(x),y_correct))

y = 1 2 3 2 1 2 3 2 1

Assertion failed.

3   Fail
x = (1:4)'; y_correct = [1 4 3 2;2 1 4 3;3 2 1 4;4 3 2 1]; assert(isequal(shifted(x),y_correct))

y = 1 2 3 4 2 1 2 3 3 2 1 2 4 3 2 1

Assertion failed.

4   Fail
x = (1:7)'; y_correct = [1 7 6 5 4 3 2;2 1 7 6 5 4 3;3 2 1 7 6 5 4;... 4 3 2 1 7 6 5;5 4 3 2 1 7 6; 6 5 4 3 2 1 7; 7 6 5 4 3 2 1]; assert(isequal(shifted(x),y_correct))

y = 1 2 3 4 5 6 7 2 1 2 3 4 5 6 3 2 1 2 3 4 5 4 3 2 1 2 3 4 5 4 3 2 1 2 3 6 5 4 3 2 1 2 7 6 5 4 3 2 1

Assertion failed.

5   Fail
x = (1:6)'; y_correct = [1 6 5 4 3 2;2 1 6 5 4 3;3 2 1 6 5 4;... 4 3 2 1 6 5;5 4 3 2 1 6; 6 5 4 3 2 1]; assert(isequal(shifted(x),y_correct))

y = 1 2 3 4 5 6 2 1 2 3 4 5 3 2 1 2 3 4 4 3 2 1 2 3 5 4 3 2 1 2 6 5 4 3 2 1

Assertion failed.