Some Basic Algorithm

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1. Hanmming Distance
   Calculate the count of "1" of an unsigned integer in binary expression.
2. Cubic Spline
   Use cubic spline to fit data and evaluate value using interpolation and extrapolation. More detail
3. Polynominal Roots
   Calculate the polynominal roots. Ref: http://mathworld.wolfram.com/PolynomialRoots.html