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
Reindex a vector
Find the logic
Who has power to do everything in this world?
Basic commands - Least common multiple
Basic matlab numeric and string manipulations
Nth root of a number
count upper and lower case characters
Remove white spaces at the end of the input string
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