In a matrix, A = [1,2;3,4]
raise the power of each element like: 1^1+2^3+3^2+4^4 and add it all to produce the result 274
Swap the first and last columns
Rotate input square matrix 90 degrees CCW without rot90
Permute diagonal and antidiagonal
Finding perimeter of a rectangle
Capitalized string operations
Remove white spaces at the end of the input string
Nth root of a number
Repetition of matrices
Check if there are white spaces in the input string
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