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  1. library(stringr)
  2. text <- 'tessst gfvdsvs bbbddsa daxz'
  3. new <- unlist(str_extract_all(text, "\\p{L}*(\\p{L})\\1+\\p{L}*"))
  4. i <- max(nchar( unlist(str_extract_all(new, "(.)\\1+")) ))
  5. new
  6. i
Success #stdin #stdout 0.28s 41812KB
stdin
Standard input is empty
stdout
[1] "tessst"  "bbbddsa"
[1] 3