1772: [编程入门]二进制移位练习

解题思路:

注意事项:

参考代码:

def two_to_ten(m):
    j = 0
    sum =0
    for i in str(m)[::-1]:
        sum += int(i)*2**j
        j += 1
    return sum
 
def ten_to_two(m):
    st=''
    while m!=0:
        st += str(m%2)
        m = m//2
    return st[::-1]
n = int(input())
n_to_2 = ten_to_two(n)
p = n_to_2[::-1]
p = p[7:3:-1]
print(two_to_ten(p))