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package com.javarush.task.task19.task1916;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Отслеживаем изменения
*/
public class Solution {
public static List<LineItem> lines = new ArrayList<LineItem>();
public static void main(String[] args) throws IOException {
BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
String line1=reader.readLine();
String line2= reader.readLine();
reader.close();
ArrayList<String> oneList=new ArrayList<>();
ArrayList<String> twoList=new ArrayList<>();
BufferedReader reader1=new BufferedReader(new FileReader(line1));
BufferedReader reader2=new BufferedReader(new FileReader(line2));
while(reader1.ready()){
oneList.add(reader1.readLine());
}
while(reader2.ready()){
twoList.add(reader2.readLine());
}
reader1.close();
reader2.close();
int i = 0;
while(oneList.size()!=0 && twoList.size()!=0){
if (oneList.get(0).equals(twoList.get(0))){
lines.add(new LineItem(Type.SAME,oneList.get(0)));
oneList.remove(0);
twoList.remove(0);
}else if(oneList.get(0+1).equals(twoList.get(0))){
lines.add(new LineItem(Type.REMOVED,oneList.get(0)));
oneList.remove(0);
}else{
lines.add(new LineItem(Type.ADDED,twoList.get(0)));
twoList.remove(0);
}
i++;
}
if (oneList.size()!=0){
while (twoList.size()!=0){
lines.add(new LineItem(Type.ADDED,twoList.get(0)));
twoList.remove(0);
}
}else{
while (oneList.size()!=0) {
lines.add(new LineItem(Type.REMOVED, oneList.get(0)));
twoList.remove(0);
}
}
}
public static enum Type {
ADDED, //добавлена новая строка
REMOVED, //удалена строка
SAME //без изменений
}
public static class LineItem {
public Type type;
public String line;
public LineItem(Type type, String line) {
this.type = type;
this.line = line;
}
}
}