Description
# Create a function that takes a list of non-negative integers and strings and return a new list without the strings.
# Requirements
# Zero is a non-negative integer.
# The given list only has integers and strings.
# The original order must be maintained.
## Tests (uncomment)
# f1=filter_list([1, 2, “a”, “b”]) # [1, 2]
# print(f1)
# f2=filter_list([1, “a”, “b”, 0, 15]) # [1, 0, 15]
# print(f2)
# f3=filter_list([1, 2, “aasf”, “1”, “123”, 123]) # [1, 2, 123]
# print(f3)