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  1. x <- c("+331234567","+3301234567","00331234567","003301234567","0331234567","033-123-456-7","0033.1234567")
  2. gsub("^(?:00?|\\+)330?|\\W", "", x, perl=TRUE)
Success #stdin #stdout 0.23s 39432KB
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Standard input is empty
stdout
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[1] "1234567" "1234567" "1234567" "1234567" "1234567" "1234567" "1234567"
https://ideone.com/Pj0EHG
language:
R (R 3.5.2)
created:
5 years ago
visibility:
secret

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