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  1. sub("((?:[^H]*H){2}[^H]*)H", "\\1.","AHBHCHEFHDGA")
Success #stdin #stdout 0.23s 60752KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "AHBHC.EFHDGA"
https://ideone.com/u2Cwxi
language:
R (R 3.5.2)
created:
7 years ago
visibility:
secret

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