请问初中英语on、in等介词的用法答:in order井然有序, in person亲自,in public公开地, in progress有进展, in practice从实践上看, in rags穿着破衣,in research探索, in return作为报答,in ruins一片废墟,in short总之,in theory从理论上看, in trouble有麻烦, in tears眼泪汪汪,in time及时, in turn按顺序, in vain白白地,in view看得见...
如何用Python编写一个素数环答:def fft(vals, modulus, root_of_unity): if len(vals) == 1: return vals L = fft(vals[::2], modulus, pow(root_of_unity, 2, modulus)) R = fft(vals[1::2], modulus, pow(root_of_unity, 2, modulus)) o = [0 for i in vals] for i, (x, y) in enumerate(zip(L, R)):...