Тестовый пример выполняется, валидатор не принимает
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 filename1 = reader.readLine();
String filename2 = reader.readLine();
reader.close();
ArrayList<String> file1 = new ArrayList<>();
ArrayList<String> file2 = new ArrayList<>();
reader = new BufferedReader(new FileReader(filename1));
while (reader.ready())
file1.add(reader.readLine());
reader.close();
reader = new BufferedReader(new FileReader(filename2));
while (reader.ready())
file2.add(reader.readLine());
reader.close();
for (int i=1;i<file1.size();i++) {
if (file1.get(i-1).equals(file2.get(i-1)))
lines.add(new LineItem(Type.SAME,file1.get(i-1)));
else if (file1.get(i-1).equals(file2.get(i))) {
lines.add(new LineItem(Type.ADDED,file2.get(i-1)));
file2.remove(i-1);
i--;
}
else if (file1.get(i).equals(file2.get(i-1))) {
lines.add(new LineItem(Type.REMOVED, file1.get(i-1)));
file2.add(i-1," ");
i--;
}
}
for (LineItem item:lines) {
System.out.println(item.type + " "+item.line);
}
}
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;
}
}
}