interface Command{
public void process(int[] args);
}
class PrintCommand implements Command{
public void process(int[] args){
System.out.print("elements: ");
for(Integer i : args){
System.out.print(i + " ");
}
System.out.println();
}
}
class SumCommand implements Command{
public void process(int[] args){
long sum = 0;
for(Integer i : args){
sum += i;
}
System.out.println("sum: " + sum);
}
}
class Worker{
public void process(int[] args, Command command){
command.process(args);
}
}
class Main {
public static void main(String[] args) {
Worker worker = new Worker();
worker.process(new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, new PrintCommand());
worker.process(new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, new SumCommand());
worker.process(new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, new Command(){
public void process(int[] args){
long sum = 0;
for(Integer i : args){
sum += i;
}
System.out.println("average: " + (sum / args.length));
}
});
worker.process(new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, (args1) -> {
long sum = 0;
for(Integer i : args1){
sum += i;
}
System.out.println("average: " + (sum / args1.length));
});
}
}
