Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class Main {
    public static void main(String[] argv) {
        List<String> list = new ArrayList<String>();
        list.add("A");
        list.add("2");
        list.add("c2");

        System.out.println(countDistinctElements(list, 0, list.size()));
    }

    static int countDistinctElements(List source, int position, int count) {
        List list = source.subList(position, position + count);
        Set set = new HashSet();
        set.addAll(list);
        return set.size();
    }
}