Pergunta de entrevista da empresa ServiceNow
Given a string, such as ((4+5)*3+2)*91, determine whether it is a valid expression by judging the parenthesis.
Resposta da entrevista
Sigiloso
30 de out. de 2017
Hint: The pre and post parenthesis should be of equal number. Hint: The post parenthesis should never exceed pre parenthesis as you loop through the string.
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