原题传送门

1. 问题描述

2. Solution

1、思路
bit对齐

2、实现

import sys

if sys.platform != "linux":
    file_in = open("input/HJ33.txt")
    sys.stdin = file_in


def int2bin(n, bits=8):
    n_b = bin(n).replace("0b", "")
    return f'{"0" * (bits - len(n_b))}{n_b}'


def ip2int(s):
    # 10.0.3.193
    nums = list(map(int, s.split(".")))
    full_bin = "".join([int2bin(x) for x in nums])
    print(int(full_bin, 2))


def int2ip(n):
    s = int2bin(int(n), 32)
    print(".".join([str(int(s[start: start + 8], 2)) for start in range(0, 32, 8)]))


while True:
    try:
        s = input().strip()
        n = input().strip()
        ip2int(s)
        int2ip(n)
    except:
        break

标签：bin,int2bin,start,int,sys,牛客,机试,HJ33,input
来源： https://www.cnblogs.com/junstat/p/16168259.html