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
Back and Forth Rows
Find the numeric mean of the prime numbers in a matrix.
Calculate the derivative of a polynomial
Do you like your boss?
Replacing a row
Check for keywords
Repetition of matrices
generate capital english alphabets
count upper and lower case characters
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