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  1. sub("^(.).*(\\d).*$", "\\1\\2", "ABCD some random words and spaces 1234")
Success #stdin #stdout 0.46s 79168KB
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Standard input is empty
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[1] "A4"
https://ideone.com/xC79aY
language:
R (R 3.5.2)
created:
7 years ago
visibility:
secret

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