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Challenges Collatz conjecture; Count the tries to reach $1$

Wolfram Language (Mathematica), 38 bytes Tr[1^ResourceFunction["Collatz"]@#]-1& Don't Try it online! Doesn't work on TIO due to using the Collatz builtin which needs to be downloaded from ...

posted 2y ago by romanp‭  ·  edited 2y ago by romanp‭

Answer
#3: Post edited by user avatar romanp‭ · 2022-05-10T17:20:00Z (over 2 years ago)
  • # [Wolfram Language (Mathematica)], 38 bytes
  • ```Tr[1^ResourceFunction["Collatz"]@#]-1&```
  • Don't [Try it online!][TIO-l2z7430a]
  • Doesn't work on TIO due to using the Collatz builtin which needs to be downloaded from the [Function Repository](https://resources.wolframcloud.com/FunctionRepository/resources/Collatz)
  • [Wolfram Language (Mathematica)]: https://www.wolfram.com/wolframscript/
  • [TIO-l2z7430a]: https://tio.run/##y00syUjNTSzJTE78n2b7P6Qo2jAuKLU4v7QoOdWtNC@5JDM/L1rJOT8nJ7GkSinWQTlW11Dtf0BRZl5JdJq@Q1BiXnpqtKFBbOx/AA "Wolfram Language (Mathematica) – Try It Online"
  • Relatively badly-golfed version without ResourceFunction (52 bytes):
  • `i=0;If[#!=1,i++;#0[If[EvenQ@#,Floor[#/2],3 #+1]],i]&`
  • [Try it online!](https://tio.run/##y00syUjNTSzJTE78/z@gKDOvJDrT1sDaMy1aWdHWUCdTW9ta2SAayHUtS80LdFDWccvJzy@KVtY3itUxVlDWNoyN1cmMVXMwj/3/HwA)
  • Had to add a slightly janky print statement into the main body for the value of i to get reset on each evaluation.
  • # [Wolfram Language (Mathematica)], 38 bytes
  • Tr[1^ResourceFunction["Collatz"]@#]-1&
  • Don't [Try it online!][TIO-l2z7430a]
  • Doesn't work on TIO due to using the Collatz builtin which needs to be downloaded from the [Function Repository](https://resources.wolframcloud.com/FunctionRepository/resources/Collatz)
  • [Wolfram Language (Mathematica)]: https://www.wolfram.com/wolframscript/
  • [TIO-l2z7430a]: https://tio.run/##y00syUjNTSzJTE78n2b7P6Qo2jAuKLU4v7QoOdWtNC@5JDM/L1rJOT8nJ7GkSinWQTlW11Dtf0BRZl5JdJq@Q1BiXnpqtKFBbOx/AA "Wolfram Language (Mathematica) – Try It Online"
  • Relatively badly-golfed version without ResourceFunction (52 bytes):
  • i=0;If[#!=1,i++;#0[If[EvenQ@#,Floor[#/2],3 #+1]],i]&
  • [Try it online!](https://tio.run/##y00syUjNTSzJTE78/z@gKDOvJDrT1sDaMy1aWdHWUCdTW9ta2SAayHUtS80LdFDWccvJzy@KVtY3itUxVlDWNoyN1cmMVXMwj/3/HwA)
  • Had to add a slightly janky print statement into the main body for the value of i to get reset on each evaluation.
#2: Post edited by user avatar romanp‭ · 2022-05-10T17:19:06Z (over 2 years ago)
  • # [Wolfram Language (Mathematica)], 38 bytes
  • `Tr[1^ResourceFunction["Collatz"]@#]-1&`
  • Don't [Try it online!][TIO-l2z7430a]
  • Doesn't work on TIO due to using the Collatz builtin which needs to be downloaded from the [Function Repository](https://resources.wolframcloud.com/FunctionRepository/resources/Collatz)
  • [Wolfram Language (Mathematica)]: https://www.wolfram.com/wolframscript/
  • [TIO-l2z7430a]: https://tio.run/##y00syUjNTSzJTE78n2b7P6Qo2jAuKLU4v7QoOdWtNC@5JDM/L1rJOT8nJ7GkSinWQTlW11Dtf0BRZl5JdJq@Q1BiXnpqtKFBbOx/AA "Wolfram Language (Mathematica) – Try It Online"
  • Relatively badly-golfed version without ResourceFunction (52 bytes):
  • `i=0;If[#!=1,i++;#0[If[EvenQ@#,Floor[#/2],3 #+1]],i]&`
  • [Try it online!](https://tio.run/##y00syUjNTSzJTE78/z@gKDOvJDrT1sDaMy1aWdHWUCdTW9ta2SAayHUtS80LdFDWccvJzy@KVtY3itUxVlDWNoyN1cmMVXMwj/3/HwA)
  • Had to add a slightly janky print statement into the main body for the value of i to get reset on each evaluation.
  • # [Wolfram Language (Mathematica)], 38 bytes
  • ```Tr[1^ResourceFunction["Collatz"]@#]-1&```
  • Don't [Try it online!][TIO-l2z7430a]
  • Doesn't work on TIO due to using the Collatz builtin which needs to be downloaded from the [Function Repository](https://resources.wolframcloud.com/FunctionRepository/resources/Collatz)
  • [Wolfram Language (Mathematica)]: https://www.wolfram.com/wolframscript/
  • [TIO-l2z7430a]: https://tio.run/##y00syUjNTSzJTE78n2b7P6Qo2jAuKLU4v7QoOdWtNC@5JDM/L1rJOT8nJ7GkSinWQTlW11Dtf0BRZl5JdJq@Q1BiXnpqtKFBbOx/AA "Wolfram Language (Mathematica) – Try It Online"
  • Relatively badly-golfed version without ResourceFunction (52 bytes):
  • `i=0;If[#!=1,i++;#0[If[EvenQ@#,Floor[#/2],3 #+1]],i]&`
  • [Try it online!](https://tio.run/##y00syUjNTSzJTE78/z@gKDOvJDrT1sDaMy1aWdHWUCdTW9ta2SAayHUtS80LdFDWccvJzy@KVtY3itUxVlDWNoyN1cmMVXMwj/3/HwA)
  • Had to add a slightly janky print statement into the main body for the value of i to get reset on each evaluation.
#1: Initial revision by user avatar romanp‭ · 2022-05-09T21:02:48Z (over 2 years ago) 
# [Wolfram Language (Mathematica)], 38 bytes

`Tr[1^ResourceFunction["Collatz"]@#]-1&`

Don't [Try it online!][TIO-l2z7430a]

Doesn't work on TIO due to using the Collatz builtin which needs to be downloaded from the [Function Repository](https://resources.wolframcloud.com/FunctionRepository/resources/Collatz)

[Wolfram Language (Mathematica)]: https://www.wolfram.com/wolframscript/
[TIO-l2z7430a]: https://tio.run/##y00syUjNTSzJTE78n2b7P6Qo2jAuKLU4v7QoOdWtNC@5JDM/L1rJOT8nJ7GkSinWQTlW11Dtf0BRZl5JdJq@Q1BiXnpqtKFBbOx/AA "Wolfram Language (Mathematica) – Try It Online"


Relatively badly-golfed version without ResourceFunction (52 bytes):

`i=0;If[#!=1,i++;#0[If[EvenQ@#,Floor[#/2],3 #+1]],i]&`

[Try it online!](https://tio.run/##y00syUjNTSzJTE78/z@gKDOvJDrT1sDaMy1aWdHWUCdTW9ta2SAayHUtS80LdFDWccvJzy@KVtY3itUxVlDWNoyN1cmMVXMwj/3/HwA)

Had to add a slightly janky print statement into the main body for the value of i to get reset on each evaluation.