Okay I want to do the following... I have a number (bigger then 10). Assume I got the number 4327 now I want to change this number to a numeric array with the values [4,3,2,7] as fast as possible. I only thought of one solutions (which is possible also the fastest), but I want to know if anyone has maybe a better idea. My solution is just to cast that number to a string using the NumberToString VI, "4327", then split into a array of strings ["4","3","2","7"], and cast it back using the StringToNumber VI. Anyone got a better faster idea?

Absolutely not! Although Nathand's solution could be expanded to work with any base as well. This may be a bit faster the use of native recursion vs the buffer expansion should show in favor of the recusive technique up to a considerable number of digits.