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  1. object Main extends App {
  2. def X(d:String) = d.sliding(2).zipWithIndex.collect{case ("01",i) => i%2}.mkString.init
  3.  
  4. println(X("10110101010001001010010100101000101010100010101001010101001001010010101"))
  5. println(X("10101001000001010101001010100101001000010010101001000101011110001010001"))
  6. }
Success #stdin #stdout 0.4s 322240KB
stdin
Standard input is empty
stdout
100001100111111111000010011
11000001110010111000011