How can we find all possible **CONTINUOUS** subset from a given subset?

eg:

a =[1,2,3]

desired output: `[1,2,3,12,23,123]`

P.S. Null is not required. Also, can I have python implementation?

How can we find all possible **CONTINUOUS** subset from a given subset?

eg:

a =[1,2,3]

desired output: `[1,2,3,12,23,123]`

P.S. Null is not required. Also, can I have python implementation?

Its called subarrays. Google how to generate all subarrays.

EDIT-

Link- http://www.geeksforgeeks.org/subarraysubstring-vs-subsequence-and-programs-to-generate-them/

Thanks for that!