Cody

Problem 44402. Horizontal matrix sort

Solution 1807868

Submitted on 6 May 2019
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Test Suite

Test Status Code Input and Output
1   Fail
x = []; y_correct = []; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test1 (line 3) assert(isequal(backAndforth(x),y_correct))

2   Fail
x = 0; y_correct = [0 0]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test2 (line 3) assert(isequal(backAndforth(x),y_correct))

3   Fail
x = zeros(100); x(41,68) = 1; y_correct = zeros(100,200); y_correct(41,100:101) = [1,1]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test3 (line 5) assert(isequal(backAndforth(x),y_correct))

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

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test4 (line 3) assert(isequal(backAndforth(x),y_correct))

5   Fail
x = 1:10; y_correct = [x,fliplr(x)]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test5 (line 3) assert(isequal(backAndforth(x),y_correct))

6   Fail
x = (1:10)'; y_correct = [x,x]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test6 (line 3) assert(isequal(backAndforth(x),y_correct))

7   Fail
x = [1; 4; 3; 2]; y_correct = [1 1; 4 4; 3 3; 2 2]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test7 (line 3) assert(isequal(backAndforth(x),y_correct))

8   Fail
x = [9 2 8 1; 5 4 9 8; 8 9 6 9]; y_correct = [1 2 8 9 9 8 2 1; 4 5 8 9 9 8 5 4; 6 8 9 9 9 9 8 6]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test8 (line 5) assert(isequal(backAndforth(x),y_correct))

9   Fail
x = reshape(1:9,[3,3]); r = [1:3:7,7:-3:1]; y_correct = [r;r+1;r+2]; assert(isequal(backAndforth(x),y_correct))

Error using sort Sorting direction must be 'ascend' or 'descend'. Error in backAndforth (line 2) w=sort(x,2,'descent'); Error in Test9 (line 4) assert(isequal(backAndforth(x),y_correct))