I have an IP address. For example, 192.168.2.10 Also I have a dictionary: Question: How should I find the city from my IP address and use this dictionary spending less time (time complexity) as possible? Answer The “proper answer” if you want the best complexity for arbitrarily large data sets is the one given given by Ji Bin. To really
Tag: ip
How to match IP addresses in a comma-separated string
Code show as below, but there is a problem: “255.255.255.256” will be processed into “255.255.255.25” If I pass the 255.255.255.255,255.255.255.256,260.255.255.255 string I expect [“255.255.255.255”] as the results. Answer You want to implement comma boundaries, (?<![^,]) and (?![^,]): See the regex demo. Details (?<![^,]) – a negative lookbehind that matches a location not immediately preceded with a char other than a
How to switch an IP from an instance to another with gcloud
Is there a way to “detach” a reserved internal or external IP address from a VM to assign it to another instance with the gcloud command? I want to do this as I’m scripting with Python and want to automate this process. Answer Following commands might help you – [1]. To reserve external ip addresses. [2]. To unset the external
Convert IP address string to binary in Python
As part of a larger application, I am trying to convert an IP address to binary. Purpose being to later calculate the broadcast address for Wake on LAN traffic. I am assuming that there is a much more efficient way to do this then the way I am thinking. Which is breaking up the IP address by octet, adding 0’s