4 lines
161 B
Scala
4 lines
161 B
Scala
def encode(s:String) = {
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s.foldLeft((0,s(0),""))( (t,c) => t match {case (i,p,s) => if (p==c) (i+1,p,s) else (1,c,s+i+p)})
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match {case (i,p,s) => s+i+p}
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}
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