Compare two strings, whether they are equal or not.
pressure to dB?
Rotate a Matrix by 90 degrees
Check if number exists in vector
Create a vector
Count given word x in text.
Set x value to each even index of vector y.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
Pointwise multiplication of vectors.
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