Additional test cases have been added.
Find the peak 3n+1 sequence value
Find the sum of the elements in the "second" diagonal
Convert a numerical matrix into a cell array of strings
Change the sign of even index entries of the reversed vector
Sum of odd numbers in a matrix
Return elapsed time
Check if vertices form a rectangle
Determine the number of maximal cliques in an undirected graph
Number of active Cody players by date
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