What are the methods to replace a certain pattern in a string in R?

Both 2 and 3
Use the gsub() function
Use the replace() function
Use the str_replace() function

In R, we can use the gsub() function from base R or the str_replace() function from the stringr package to replace a certain pattern in a string. For example, gsub("a", "b", "banana") or str_replace("banana", "a", "b") would replace all occurrences of "a" with "b" in the string "banana".

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