Count Repeated IP Addresses | Dataford Interview Questions

Problem

Given a list of log lines as strings, return the IP address that appears most often. Each valid line starts with an IPv4 address followed by a space and the rest of the message. Ignore malformed lines that do not start with a valid IPv4 address. If multiple IPs have the same highest count, return the lexicographically smallest one. If no valid IP exists, return an empty string.

Constraints

1 <= len(logs) <= 10^4
0 <= len(logs[i]) <= 200
IPv4 format is four decimal parts separated by .
A valid IPv4 part is an integer from 0 to 255

Problem

Constraints

1 <= len(logs) <= 10^4
0 <= len(logs[i]) <= 200
IPv4 format is four decimal parts separated by .
A valid IPv4 part is an integer from 0 to 255

Problem

Constraints

1 <= len(logs) <= 10^4
0 <= len(logs[i]) <= 200
IPv4 format is four decimal parts separated by .
A valid IPv4 part is an integer from 0 to 255

Problem

Constraints

1 <= len(logs) <= 10^4
0 <= len(logs[i]) <= 200
IPv4 format is four decimal parts separated by .
A valid IPv4 part is an integer from 0 to 255