Cody

# Problem 1038. Change the sign of even index entries of the reversed vector

Solution 1968925

Submitted on 9 Oct 2019 by Jorgen Jackson
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### Test Suite

Test Status Code Input and Output
1   Pass
x = [4 -5 -2 9]; y_correct = [9 2 -5 -4]; assert(isequal(your_fcn_name(x),y_correct))

y = 9 -2 -5 4 y = 9 2 -5 4 y = 9 2 -5 -4

2   Pass
x = ones(1,4); y_correct = [1 -1 1 -1]; assert(isequal(your_fcn_name(x),y_correct))

y = 1 1 1 1 y = 1 -1 1 1 y = 1 -1 1 -1

3   Pass
x = 1:10; y_correct = [10 -9 8 -7 6 -5 4 -3 2 -1]; assert(isequal(your_fcn_name(x),y_correct))

y = 10 9 8 7 6 5 4 3 2 1 y = 10 -9 8 7 6 5 4 3 2 1 y = 10 -9 8 -7 6 5 4 3 2 1 y = 10 -9 8 -7 6 -5 4 3 2 1 y = 10 -9 8 -7 6 -5 4 -3 2 1 y = 10 -9 8 -7 6 -5 4 -3 2 -1

4   Pass
x = 2:2:12; y_correct = [12 -10 8 -6 4 -2]; assert(isequal(your_fcn_name(x),y_correct))

y = 12 10 8 6 4 2 y = 12 -10 8 6 4 2 y = 12 -10 8 -6 4 2 y = 12 -10 8 -6 4 -2

5   Pass
x = -3:3; y_correct = [3 -2 1 0 -1 2 -3]; assert(isequal(your_fcn_name(x),y_correct))

y = 3 2 1 0 -1 -2 -3 y = 3 -2 1 0 -1 -2 -3 y = 3 -2 1 0 -1 -2 -3 y = 3 -2 1 0 -1 2 -3

6   Pass
x = [1 1 2 3 5 8 13 21 34 55 89 144]; y_correct = [144 -89 55 -34 21 -13 8 -5 3 -2 1 -1]; assert(isequal(your_fcn_name(x),y_correct))

y = 144 89 55 34 21 13 8 5 3 2 1 1 y = 144 -89 55 34 21 13 8 5 3 2 1 1 y = 144 -89 55 -34 21 13 8 5 3 2 1 1 y = 144 -89 55 -34 21 -13 8 5 3 2 1 1 y = 144 -89 55 -34 21 -13 8 -5 3 2 1 1 y = 144 -89 55 -34 21 -13 8 -5 3 -2 1 1 y = 144 -89 55 -34 21 -13 8 -5 3 -2 1 -1

7   Pass
x = [1 0 1 0 1 0 1 0 1 0 1 0]; y_correct = [0 -1 0 -1 0 -1 0 -1 0 -1 0 -1]; assert(isequal(your_fcn_name(x),y_correct))

y = 0 1 0 1 0 1 0 1 0 1 0 1 y = 0 -1 0 1 0 1 0 1 0 1 0 1 y = 0 -1 0 -1 0 1 0 1 0 1 0 1 y = 0 -1 0 -1 0 -1 0 1 0 1 0 1 y = 0 -1 0 -1 0 -1 0 -1 0 1 0 1 y = 0 -1 0 -1 0 -1 0 -1 0 -1 0 1 y = 0 -1 0 -1 0 -1 0 -1 0 -1 0 -1

8   Pass
x = [0 1 0 2 0 3 0 4 0 5 0 6]; y_correct = [6 0 5 0 4 0 3 0 2 0 1 0]; assert(isequal(your_fcn_name(x),y_correct))

y = 6 0 5 0 4 0 3 0 2 0 1 0 y = 6 0 5 0 4 0 3 0 2 0 1 0 y = 6 0 5 0 4 0 3 0 2 0 1 0 y = 6 0 5 0 4 0 3 0 2 0 1 0 y = 6 0 5 0 4 0 3 0 2 0 1 0 y = 6 0 5 0 4 0 3 0 2 0 1 0 y = 6 0 5 0 4 0 3 0 2 0 1 0

9   Pass
x = [0 1 0 1 0 1 0 1 0 1 0 1]; y_correct = [x(2:end) x(1)]; assert(isequal(your_fcn_name(x),y_correct))

y = 1 0 1 0 1 0 1 0 1 0 1 0 y = 1 0 1 0 1 0 1 0 1 0 1 0 y = 1 0 1 0 1 0 1 0 1 0 1 0 y = 1 0 1 0 1 0 1 0 1 0 1 0 y = 1 0 1 0 1 0 1 0 1 0 1 0 y = 1 0 1 0 1 0 1 0 1 0 1 0 y = 1 0 1 0 1 0 1 0 1 0 1 0