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  1. v <- c("Mazda RX4","Mazda RX4 Wag","Datsun 710","Hornet 4 Drive","Hornet Sportabout","Valiant")
  2. gsub("^(?:Hornet|Valiant)\\s*(*SKIP)(*F)|(.+)", "*\\1*", v, perl=TRUE)
Success #stdin #stdout 0.29s 39088KB
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Standard input is empty
stdout
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[1] "*Mazda RX4*"         "*Mazda RX4 Wag*"     "*Datsun 710*"       
[4] "Hornet *4 Drive*"    "Hornet *Sportabout*" "Valiant"
https://ideone.com/oqzoki
language:
R (R 3.5.2)
created:
2 years ago
visibility:
public

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