Convert help

[Henry Pastor]

Hello. I'm new to java micro developing and I'm making a program that converts units of time,length,temp etc.
My problem is the length of the program because of making if/else of all the possible conversion. For example, converting seconds to minute,hour,weeks,months.
And then converting minute to second,day,hour,weeks. Is there a shortcut for this?

[Ulf Dittmer]

How about convering everything to a base unit, and then converting from the base unit to the target unit? E.g. for time: "minutes to days" becomes "minute to second" and then "second to days".

[Henry Pastor]

ahh. But you select the conversion unit with 2 choicegroup. The first one is for the base unit and then the 2nd is the target. Even if I convert everything first to the base before converting to the target unit, I still need to check the choices made in the 2 choicegroups right? So i still need an if else for each.

[Ulf Dittmer]

Yes, but you only need (number of items in 1st group) + (number of items in 2nd group) comparisons, not (number of items in 1st group) * (number of items in 2nd group).

[Henry Pastor]

Can you please explain how it works? I really cant picture it. I'm trying to code it right now