You are given a list of countries, each on a new line. Your task is to read them into an array and then filter out (remove) all the names containing the letter 'a' or 'A'.
The input format consists of a list of country names, each on a separate line. The only characters present in the country names will be upper or lower case characters and hyphens.
From the given list, remove the names that contain 'a' or 'A' in them. If there are no names left after removing these characters, you should display a blank line.
Namibia
Nauru
Nepal
Netherlands
NewZealand
Nicaragua
Niger
Nigeria
NorthKorea
Norway
Niger