Data Science Regular Expressions Text Variables Online Exam Quiz
Data Science Regular Expressions Text Variables GK Quiz. Question and Answers related to Data Science Regular Expressions Text Variables. MCQ (Multiple Choice Questions with answers about Data Science Regular Expressions Text Variables
Which of the following signs are used to indicate repetition?
Options
A : #
B : *
C : –
D : All of the mentioned
Which of the following metacharacter is used to refer to any character?
Options
A : %
B : @
C : .
D : All of the mentioned
Which of the following is used for specifying character class with metacharacter?
Options
A : []
B : {}
C : /+
D : All of the mentioned
Which of the following function is used for searching text strings by means of regular expression?
Options
A : grepd
B : grepl
C : gepexpr
D : all of the mentioned
Which of the following function is good for the automatic splitting of names?
Options
A : split
B : strsplit
C : autsplit
D : none of the mentioned
Which of the following function is used for fixing character vectors?
Options
A : tolower
B : toUPPER
C : toLOWER
D : all of the mentioned
merge function is used for merging data frames.
Options
A : True
B : False
C :
D :
Regular expressions can be thought of as a combination of literals and metacharacters.
Options
A : True
B : False
C :
D :
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