For given input matrix a, rotate it by 90 degrees and find the sum of the diagonals.
1 2 3 4
5 6 7 8
8 10 12 -2
-1 -3 -5 -7
Reverse the vector
Output any real number that is neither positive nor negative
Perfect Square or not
Reverse a matrix
Find the dimensions of a matrix
find number of times of occurrence of the most frequent number in a row vector
Day counter function
Product of all elements in an array
Check for keywords
Basics: counting digits of a number irrespective of the sign
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