Cody

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

Solution 1588017

Submitted on 20 Jul 2018 by Marco Tullio
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### Test Suite

Test Status Code Input and Output
1   Pass
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 5 1 1 1 2 1 2 2 2 3 2 3 3 3 4 3 4 4 4 5 4 5 5 5 y = 1 5 4 1 1 2 1 5 2 2 3 2 1 3 3 4 3 2 4 4 5 4 3 5 5 y = 1 5 4 3 1 2 1 5 4 2 3 2 1 5 3 4 3 2 1 4 5 4 3 2 5 y = 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

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

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

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

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

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