map: Return an iterator that applies function to every item of iterable, yielding the results. If additional iterable arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel. With multiple iterables, the iterator stops when the shortest iterable is exhausted.
int: Return an integer object constructed from a number or string x, or return
0 if no arguments are given.
filter: Construct an iterator from those elements of iterable for which function returns true. iterable may be either a sequence, a container which supports iteration, or an iterator. If function is
None, the identity function is assumed, that is, all elements of iterable that are false are removed.
#this line create a string variable.
stringOfInteger = ["1","5","10","15",None,"","20","25","30"]
#split string and create an integer data type array.
intArray = map(int,filter(None,stringOfInteger))
print("elements of int array............")
for a in intArray: