[Jprogramming] Pretty print hours of the 12-hour clock

[glts]

On Wed, Apr 2, 2014 at 11:12 AM, glts <676c7473 at gmail.com> wrote:
>    fmthours i.24
> ┌────┬───┬───┬───┬───┬───┬───┬───┬───┬───┬────┬────┬────┬───┬───┬───┬───┬───┬───┬───┬───┬───┬────┬────┐
> │12am│1am│2am│3am│4am│5am│6am│7am│8am│9am│10am│11am│12pm│1pm│2pm│3pm│4pm│5pm│6pm│7pm│8pm│9pm│10pm│11pm│
> └────┴───┴───┴───┴───┴───┴───┴───┴───┴───┴────┴────┴────┴───┴───┴───┴───┴───┴───┴───┴───┴───┴────┴────┘
>
> Newbie here. With some effort I managed to squeeze the verb 'fmthours'
> into a single line, but the result wasn't too pretty. The edge cases
> (12am/pm) caused me the most trouble. How would a virtuos@ do it?

Thank you all very much for your answers.

Only now do I realise that my original problem description was rather
vague. So, for the record, what 'fmthours' achieves is pretty printing
integers in the interval [0, 23] as hours of the 12-hour clock.

   schedule=: fmthours 8 10 12 19 22 23 0
   schedule
┌───┬────┬────┬───┬────┬────┬────┐
│8am│10am│12pm│7pm│10pm│11pm│12am│
└───┴────┴────┴───┴────┴────┴────┘


-- 
David