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Scala, 50 bytes Stream.iterate(_)(x=>Seq(x/2,3*x+1)(x%2))indexOf 1 Try it in Scastie!
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#1: Initial revision
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user
·
2021-09-15T21:23:22Z (about 3 years ago)
# Scala, 50 bytes ```scala Stream.iterate(_)(x=>Seq(x/2,3*x+1)(x%2))indexOf 1 ``` [Try it in Scastie!](https://scastie.scala-lang.org/3iumEKb4Taei3vyfO8GPVQ)