In a given row vector, find the number of times a mode of a row vector has occurred
example: in [2 5 5 5 5 3], output is 4
Number of 1s in a binary string
Rotate input square matrix 90 degrees CCW without rot90
Length of the hypotenuse
Replace values under a limit
Perimeter of a semicircle
Nth root of a number
Basics: counting digits of a number irrespective of the sign
Remove white spaces at the end of the input string
Basic matrix operations using standard MATLAB commands
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