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
Program an exclusive OR operation with logical operators
Remove NaN ?
Create an n-by-n null matrix and fill with ones certain positions
Free passes for everyone!
Flip the vector from right to left
Sum of unique multiples of 3 and 5
Basics: counting digits of a number irrespective of the sign
Check if there are white spaces in the input string
Nth root of a number
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