Given n, construct a matrix as shown in the example below.
Example
For n=8, the output should look like this:
1 2 3 4 0 0 0 0 1 2 3 4 0 0 0 0 1 2 3 4 0 0 0 0 1 2 3 4 0 0 0 0 0 0 0 0 4 3 2 1 0 0 0 0 4 3 2 1 0 0 0 0 4 3 2 1 0 0 0 0 4 3 2 1
354 Solvers
Make a run-length companion vector
453 Solvers
213 Solvers
204 Solvers
424 Solvers