Problem · Hash Table
Top-K IP Addresses from File Records
Problem statement
The array addresses represents the records of a newline-delimited file, with one IP address per record. Every record is a valid canonical IPv4 address.
The problem statement continues
ProExamples
Example 1
addresses = ["10.0.0.1","10.0.0.2","10.0.0.1","192.168.1.1","10.0.0.2","10.0.0.1"]k = 2return = ["10.0.0.1","10.0.0.2"]10.0.0.1 appears three times, 10.0.0.2 appears twice, and 192.168.1.1 appears once. The first two addresses therefore form the result.
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