fork(1) download 
  1. m = /\b(0(\g<1>)?1)\b/.match('000111');
  2. puts m;
  3.  
Success #stdin #stdout 0.01s 7452KB
comments (?)
stdin 
Standard input is empty
stdout 
000111
https://ideone.com/AdzDPs
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
public

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