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
Remove the vowels
Program an exclusive OR operation with logical operators
Array of Ones
Calculate area of sector
Find NaNs in the matrix
Remove white spaces at the end of the input string
Nth root of a number
Check for keywords
convert the number to binary format & count digits
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