牛客网-2的幂次方【理解递归】
给定一个数,将他表示为只有0,2,()的形式,其中1==2(0),4=2(2),依此类推Every positive number can be presented by the exponential form.For example, 137 = 2^7 + 2^3 + 2^0。 Let’s present a^b by the form a(b).Then 137 is prese...