Microsoft Interview Question
SDE-2sTeam: Azure
Country: United States
Interview Type: In-Person
I don`t think it is necessary to store all phone numbers except a new number is generated.
I don`t think it is necessary to store all phone numbers except a new number is generated.
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Trie(prefix tree). The length of a phone number is a fixed number and phone numbers in close area may share the same area code(prefix). So It will be pretty efficient for searching(O(m), m is the length of the phone number) and storing all those phone numbers inside a Trie.
- kevin.Luo91 October 07, 2013