Parse and evaluate expressions like these:
'1 + 2'
'51 - 78'
'42 * 9'
The only operators are +, -, *.
Both arguments will be integers between -50 and 50.
Return a list sorted by number of occurrences
Knight's Tour Checker
Back to basics 7 - Equal NaNs
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Sum the elements in either diagonal of a square matrix
Convert double scalar to half-precision floating point (IEEE 754r)
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