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  1. new<-c("111", "1234567891", "12")
  2. sub("^(\\d{3})\\d{7}$", "\\1", new)
Success #stdin #stdout 0.19s 183680KB
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Standard input is empty
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[1] "111" "123" "12"
https://ideone.com/hrZKVL
language:
R (R 3.5.2)
created:
6 years ago
visibility:
secret

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