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Given a matrix as 2D array, print the matrix in reverse spiral form.
Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains two integers m and n denoting the size of the matrix(m X n). The next line contains m*n space separated integers in row-wise form.
Output:
Print the matrix in reverse spiral form.
Constraints:
1<=T<=10^5
1<=m,n<=10^5
1<=a[m,n]<=10^5
Example:
Input:
1
3 6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Output:
11 10 9 8 7 13 14 15 16 17 18 12 6 5 4 3 2 1
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