How to use Switch with variable number of terms?

[aheight]

Hi,

I'd like to use Switch with an integer partition of a number. For example, if n=4, then I define the partition as:
monodromyTypes = IntegerPartitions[n];
this gives:
monodromyTypes={{4}, {3, 1}, {2, 2}, {2, 1, 1}, {1, 1, 1, 1}}. I'd then like to set up a Switch depending on what the monodromy is so I set up the Switch codes as:

switchCodes =
Flatten[Table[{monodromyTypes[[i]], i}, {i, 1,
Length[monodromyTypes]}], 1]

this gives me:

{{4}, 1, {3, 1}, 2, {2, 2}, 3, {2, 1, 1}, 4, {1, 1, 1, 1}, 5}

However just passing that array to Switch won't work. I have to sequence it or something else but I don't know how to format it so it would work with Switch.

I was wondering if someone could help me with this? For example, if monodromy={2,2}, then I want to format Switch as:

Switch[monodromy,{4}, 1, {3, 1}, 2, {2, 2}, 3, {2, 1, 1}, 4, {1, 1, 1, 1},5]

and this would return 3.

Thanks.[/I]

 

[Valkarie]

You can use the pattern-matching syntax to make this work. Instead of writing out all the cases explicitly, you can use a pattern such as `monodromy_:<some list>` to match a given list. This way, you don't need to specify each case explicitly.For example:Switch[monodromy, monodromy_:{4}, 1, monodromy_:{3, 1}, 2, monodromy_:{2, 2}, 3, monodromy_:{2, 1, 1}, 4, monodromy_:{1, 1, 1, 1}, 5]This will return the appropriate value depending on the list given.