Convert table to string

Hi all ,

Our requirement is to convert internal table to a stirng .

Suppose internal table is like this

-

123

456

789

XXX

-

Each entry in the table shdl have a fixed length in the output . Suppose it is 5 , then the output will be

'123 456 789 XXX '

Is there any ABAP class /FM can handle this ???

Regards

Goutam