strsplit in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to split the string 'apple,banana,cherry' by commas.

R Programming

result <- strsplit("apple,banana,cherry", [1])

Drag options to blanks, or click blank then click option'

A","

B" "

C";"

D"-"

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong separator like a semicolon or space.

Not putting the separator inside quotes.

The strsplit function splits a string by the specified separator. Here, the separator is a comma, so we use ",".

2fill in blank

medium

Complete the code to split the string 'one|two|three' by the pipe character.

R Programming

result <- strsplit("one|two|three", [1])

Drag options to blanks, or click blank then click option'

A"\\|"

B"|"

C"||"

D"\\\\|"

Attempts:

3 left

💡 Hint

Common Mistakes

Using just "|" without escaping causes unexpected splitting.

Using "\\\\|" which overescapes in R strings.

In R, the pipe character '|' is a special symbol in regular expressions, so it must be escaped with "\\|" to be used as a literal separator.

3fill in blank

hard

Fix the error in splitting the string 'a,b;c' by commas and semicolons.

R Programming

result <- strsplit("a,b;c", [1])

Drag options to blanks, or click blank then click option'

A";,"

B",;"

C"[,;]"

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string with both separators without brackets.

Using separators without escaping special characters.

To split by multiple characters like comma and semicolon, use a regular expression with square brackets: "[,;]".

4fill in blank

hard

Fill both blanks to split the string 'red|green|blue' by pipe and get the first element.

R Programming

parts <- strsplit("red|green|blue", [1])
first_color <- parts[[1]][2]

Drag options to blanks, or click blank then click option'

A"\\|"

B[[1]]

C[1]

D"|"

Attempts:

3 left

💡 Hint

Common Mistakes

Not escaping the pipe character correctly.

Using single brackets [1] which returns a list, not a vector.

The pipe character must be escaped as "\\|" in strsplit. The result is a list, so to get the first element use [[1]].

5fill in blank

hard

Fill all three blanks to split 'cat,dog;bird' by commas or semicolons and get the second word.

R Programming

words <- strsplit("cat,dog;bird", [1])
second_word <- words[2][3]

Drag options to blanks, or click blank then click option'

A"[,;]"

B[[1]]

C[2]

D[1]

Attempts:

3 left

💡 Hint

Common Mistakes

Using single brackets [1] instead of double brackets [[1]] to extract list element.

Not using the correct regex pattern for multiple separators.

Use "[,;]" to split by comma or semicolon. The result is a list, so use [[1]] to get the vector, then [2] to get the second word.