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  1. input = "AXXXA"
  2. gsub("(?:A|(?<!^)\\G)\\KX(?=X*A)", "A", input, perl=TRUE)
  3. input = "AXXA"
  4. gsub("(?:A|(?<!^)\\G)\\KX(?=X*A)", "A", input, perl=TRUE)
  5. input = "AXA"
  6. gsub("(?:A|(?<!^)\\G)\\KX(?=X*A)", "A", input, perl=TRUE)
Success #stdin #stdout 0.31s 22832KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "AAAAA"
[1] "AAAA"
[1] "AAA"
https://ideone.com/itEXvk
language:
R (R 3.5.2)
created:
10 years ago
visibility:
public

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