Cody

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

Solution 2043884

Submitted on 3 Dec 2019
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   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 = 5 1 2 3 4 x = 5 1 2 3 4

Unable to perform assignment because the size of the left side is 5-by-2 and the size of the right side is 5-by-1. Error in shifted (line 3) y(:,1:n)=circshift(x,1) Error in Test1 (line 3) assert(isequal(shifted(x),y_correct))

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

y = 3 1 2 x = 3 1 2

Unable to perform assignment because the size of the left side is 3-by-2 and the size of the right side is 3-by-1. Error in shifted (line 3) y(:,1:n)=circshift(x,1) Error in Test2 (line 3) assert(isequal(shifted(x),y_correct))

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 = 4 1 2 3 x = 4 1 2 3

Unable to perform assignment because the size of the left side is 4-by-2 and the size of the right side is 4-by-1. Error in shifted (line 3) y(:,1:n)=circshift(x,1) Error in Test3 (line 3) assert(isequal(shifted(x),y_correct))

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

Unable to perform assignment because the size of the left side is 7-by-2 and the size of the right side is 7-by-1. Error in shifted (line 3) y(:,1:n)=circshift(x,1) Error in Test4 (line 4) assert(isequal(shifted(x),y_correct))

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 = 6 1 2 3 4 5 x = 6 1 2 3 4 5

Unable to perform assignment because the size of the left side is 6-by-2 and the size of the right side is 6-by-1. Error in shifted (line 3) y(:,1:n)=circshift(x,1) Error in Test5 (line 4) assert(isequal(shifted(x),y_correct))