The function implement the 1D sequency(Walsh) ordered fast Walsh-Hadamard transform which can be used in signal processing, pattern recongnition and Genetic alogorithms. This algorithm uses a Cooley-Tukey type signal flow graph and is implemented

利用快速傅立叶算法，实现快速沃尔什-哈达玛变换及其逆变换-Using fast Fourier algorithm, fast Walsh- Hadamard transform and its inverse transform