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Very Simple solution in Clear category for IP Network: Route Summarization by Pouf
def checkio(d):
binIPs = [''.join('{0:08b}'.format(int(s)) for s in a.split('.')) for a in d]
subnet = 32
while len(set(i[:subnet] for i in binIPs)) > 1:
subnet -= 1
route = binIPs[0][:subnet].ljust(32, '0')
route = '.'.join(str(int(route[i:][:8], 2)) for i in range(0, 32, 8))
return '{0}/{1}'.format(route, subnet)
March 10, 2016
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