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| object Euler14 extends App { | |
| def collatzConjecture(n: Long, c: Int = 1): Int = n match { | |
| case 1 => c | |
| case n if n % 2 == 0 => collatzConjecture(n / 2, c + 1) | |
| case _ => collatzConjecture(3 * n + 1, c + 1) | |
| } | |
| } | |
| println( (1 to 1000000).map(collatzConjecture(_)).zipWithIndex.max._2 + 1) |
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