# File: ChapterRecursion/listRec.py
#If L is true - non empty - print the first element then process the rest of the list.
# if the List is contains other lists within it. 
""" 
123
1234
"""
def printList(L):
    if L:       # list is not empty
        print(L[0],end='')
        printList(L[1:])  # use 'slicing

def printListC(L):
    if not L: return            # if L empty do nothing
    if type(L[0]) == type([]):  # if it is a list call printListC(First element)
        printListC(L[0])
    else:                       # no list then just print 
        print(L[0],end='')
    printListC(L[1:])           # continue ie process the rest of L 

def main():
    printList([1,2,3])
    print()
    printListC([[1,2],[[3],4]])

main()