[R] Which function to use: grep, replace, substr etc.?

[syrvn]

Hello,

I have a simple question but I don't know which method is best to use for my
problem.

I have the following strings:

str1 <- "My_name_is_peter"
str2 <- "what_is_your_surname_peter"

I would like to apply predefined abbreviations for peter=p and name=n to
both strings
so that the new strings look like the followings:

str1: "My_n_is_p"
str2: "what_is_your_surn_p"

Which method is the best to use for that particular problem?

syrvn

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