Problem 44402. Horizontal matrix sort

Solution 1807870

Submitted on 6 May 2019

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Test	Status	Code Input and Output
1	Fail	x = []; y_correct = []; assert(isequal(backAndforth(x),y_correct)) Error in solution Line: 4 Column: 28 Invalid use of operator.
2	Fail	x = 0; y_correct = [0 0]; assert(isequal(backAndforth(x),y_correct)) Error in solution Line: 4 Column: 28 Invalid use of operator.
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 in solution Line: 4 Column: 28 Invalid use of operator.
4	Fail	x = [1 4 3 2]; y_correct = [1 2 3 4 4 3 2 1]; assert(isequal(backAndforth(x),y_correct)) Error in solution Line: 4 Column: 28 Invalid use of operator.
5	Fail	x = 1:10; y_correct = [x,fliplr(x)]; assert(isequal(backAndforth(x),y_correct)) Error in solution Line: 4 Column: 28 Invalid use of operator.
6	Fail	x = (1:10)'; y_correct = [x,x]; assert(isequal(backAndforth(x),y_correct)) Error in solution Line: 4 Column: 28 Invalid use of operator.
7	Fail	x = [1; 4; 3; 2]; y_correct = [1 1; 4 4; 3 3; 2 2]; assert(isequal(backAndforth(x),y_correct)) Error in solution Line: 4 Column: 28 Invalid use of operator.
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 in solution Line: 4 Column: 28 Invalid use of operator.
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 in solution Line: 4 Column: 28 Invalid use of operator.