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
Extract leading non-zero digit
Sum all integers from 1 to 2^n
What's size of TV?
BASICS - sum part of vector
Product of all elements in an array
Calculating the total earnings of a factory
generate capital english alphabets
Day counter function
Basic matlab numeric and string manipulations
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