}
public static void main(String[] args) {
ArrayList<String> strings = new ArrayList<String>();
strings.add("роза");
strings.add("лоза");
strings.add("лира");
strings = fix(strings);
for (String string : strings) {
System.out.println(string);
}
}
public static ArrayList<String> fix(ArrayList<String> strings) {
for (int i = 0; i < strings.size(); i++)
{
String name = strings.get(i);
if (strings.contains("р") || strings.contains("л"))
{
}
else if (strings.contains("р"));
{
strings.remove(name);
}
if (strings.contains("л"))
{
strings.add(name);
strings.add(name);
}
else {
}
}
return null;
}
}
C:\Users\ilyac\.jdks\openjdk-15.0.2\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.3\lib\idea_rt.jar=60608:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.3\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\ilyac\IdeaProjects\JavaRush\out\production\JavaRush JavaWork.Solution
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.util.ArrayList.iterator()" because "strings" is null
at JavaWork.Solution.main(Solution.java:19)
Process finished with exit code 1