Regular Expressions Interview Questions

Regular Expressions interview questions

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Total Questions: 5

1. Which of the following function is good for automatic splitting of names?

A. split

B. strsplit

C. autsplit

D. none of the Mentioned

Correct Answer is : strsplit

2. Point out the correct statement:

A. gsub is used for fixing character vectors

B. sub is used for finding values like grep

C. grep is used for fixing character vectors

D. none of the Mentioned

Correct Answer is : gsub is used for fixing character vectors

3. Which of the following function is used for fixing character vectors?

A. tolower

B. toUPPER

C. toLOWER

D. all of the Mentioned

Correct Answer is : tolower

4. Which of the following metacharacter is used to refer to any character?

A. %

B. @

C. .

D. All of the Mentioned

Correct Answer is : .

5. Point out the wrong statement:

A. Variables with character values should be made less descriptive

B. Variables with character values should usually be made into factor variable

C. Common variables are used to apply transforms

D. All of the Mentioned

Correct Answer is : Variables with character values should be made less descriptive

Regular Expressions interview questions