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  1. s <- c("3 T1F ROHITE01WMILWI16", "3 T1F ROHITE01WMILwI16", "3 T1F ROHITE01WMIL.I16", "1234", "aaaa", "T1F ROHITH01WMILWI16")
  2. grep("^(?=[^A-Z]*[A-Z])(?=[^0-9]*[0-9])[0-9 A-Z]*$", s, perl=TRUE, value=TRUE)
Success #stdin #stdout 0.45s 79168KB
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[1] "3 T1F ROHITE01WMILWI16" "T1F ROHITH01WMILWI16"
https://ideone.com/fuSDfK
language:
R (R 3.5.2)
created:
9 years ago
visibility:
secret

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