Suppose you need to extract a specific pattern from strings in a large dataset. How would you approach this task in R?
- Use the grep() function
- Use the str_extract() function from stringr package
- Use the sub() function with regular expressions
- All of the above
All the options are valid methods to extract a specific pattern from strings in R. grep() and sub() functions from base R, and str_extract() function from stringr package could be used, depending on the exact requirements of the task.
Loading...
Related Quiz
- Can you describe a situation where you had to deal with factor data type in R? How did you manage it?
- How do you perform exponentiation in R?
- Can you explain the use of global and local variables in R?
- Can you describe a scenario where you would need to use a recursive function in R?
- You're given a string and asked to find out how many characters it contains. How would you do that in R?