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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 List<String> lines1 = new ArrayList<>();
public static List<String> lines2 = new ArrayList<>();
public static void main(String[] args) throws IOException {
BufferedReader nameReader = new BufferedReader(new InputStreamReader(System.in));
String fileName1 = nameReader.readLine();
String fileName2 = nameReader.readLine();
nameReader.close();
BufferedReader reader1 = new BufferedReader(new FileReader(fileName1));
BufferedReader reader2 = new BufferedReader(new FileReader(fileName2));
while (reader1.ready()) {
String str1 = reader1.readLine();
lines1.add(str1);
}
reader1.close();
while (reader2.ready()) {
String str2 = reader2.readLine();
lines2.add(str2);
}
reader2.close();
for (int i = 0; (i < lines1.size()) || (i < lines2.size()); i++) {
if (lines1.get(i).equals(lines2.get(i))) {
lines.add(new LineItem(Type.SAME, lines1.get(i)));
} else if (lines2.get(i).equals(lines1.get(i + 1))) {
lines.add(new LineItem(Type.REMOVED, lines1.get(i)));
} else if (lines1.get(i).equals(lines2.get(i - 1))) {
lines.add(new LineItem(Type.ADDED, lines1.get(i)));
}
}
}
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;
}
}
}