Pergunta de entrevista da empresa Qualtrics
Given a document are you able to pull out words that are only mentioned once? Write the code.
Resposta da entrevista
Sigiloso
21 de ago. de 2018
Use a regular expression to match words that only appear once by using a negative look a head and and look back on each word and making the expression global and case insensitive. (\w+)(?!.+\1)(?