Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

public class Main {

    public static void compareList(List<? extends Object> origin, List<? extends Object> current,
            List<Object> added, List<Object> removed) {
        if (origin == null) {
            if (current != null) {
                added.addAll(current);
            }
            return;
        }

        if (current == null) {
            if (origin != null) {
                removed.addAll(origin);
            }
            return;
        }

        Set<Object> originSet = new HashSet<Object>(origin);

        for (Object eachValue : current) {
            if (!originSet.remove(eachValue)) {
                added.add(eachValue);
            }
        }

        removed.addAll(originSet);
    }
}