题解 | #判断两个IP是否属于同一子网#
判断两个IP是否属于同一子网
https://www.nowcoder.com/practice/34a597ee15eb4fa2b956f4c595f03218
def ip_illegal(ip):
ip = ip.split('.')
for item in ip:
if not 0 <= int(item) <= 255:
return True
return False
def y_illegal(y):
y1 = y.split('.')
for item in y1:
if not 0 <= int(item) <= 255:
return True
y_bin = to_bin(y)
a = y_bin.find('0')
b = y_bin.rfind('1')
if y_bin.find('0') != y_bin.rfind('1') + 1:
return True
return False
def to_bin(ip):
ip1 = ip.split('.')
list_temp = []
for item in ip1:
list_temp.append(bin(int(item))[2:].zfill(8))
return ''.join(list_temp)
def calcu_and(y, ip):
y_bin = to_bin(y)
ip_bin = to_bin(ip)
c = ''
for item1, item2 in zip(y_bin, ip_bin):
c += str(int(item1) and int(item2))
return c
while True:
try:
y_code = input()
ip_1 = input()
ip_2 = input()
if y_illegal(y_code) or ip_illegal(ip_1) or ip_illegal(ip_2):
print(1)
else:
a = calcu_and(y_code, ip_1)
b = calcu_and(y_code, ip_2)
if calcu_and(y_code, ip_1) == calcu_and(y_code, ip_2):
print(0)
else:
print(2)
except:
break
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