Square: Shortest Unique Prefix

Image for post
Image for post

Problem:

dog 
cat
apple
apricot
fist
d
c
app
apr
f

Simple Hash-based Solution:

Your Own Data-structure-based Solution:

                   root 
|
'a' (repeated=true)
|
'p' (repeated=true)
|
-----------------------------------
| |
'p' (repeated=false) 'r' (repeated=false)
| |
'l' (repeated=false) 'i' (repeated=false)
| |
'e' (repeated=false) 'c' (repeated=false)
|
'o' (repeated=false)
|
't' (repeated=false)

Testing:

Solutions to programming interview questions at some of the top companies in the world: cppcodingzen.com

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