Given a matrix M of n*n size, the task is to complete the function which prints its elements in diagonal pattern as depicted below.
The first line of input contains an integer denoting the no of test cases. Then T test cases follow. Each test case contains an integer N denoting the size of the square matrix. In the next line are N*N space separated values of the matrix M.
For each test case output will be the space separated values of the matrix elements in diagnol form.
Example(To be used only for expected output):
1 2 3 4 5 6 7 8 9
1 2 3 4
1 2 4 7 5 3 6 8 9
1 2 3 4
Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.
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