В файле:
рот тор торт о
о тот тот тот
рот стор
тот
acca
Вывод:
рот тор
о о
тот тот
тот тот
package com.javarush.task.task22.task2207;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
/*
Обращенные слова
*/
public class Solution {
public static List<Pair> result = new LinkedList<>();
public static void main(String[] args) throws IOException {
try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
BufferedReader fileReader = new BufferedReader(new FileReader(reader.readLine()))) {
List<String> list = new ArrayList<>();
while (fileReader.ready()) {
Collections.addAll(list, fileReader.readLine().split(" "));
}
for (int i = 0; i < list.size(); i++) {
for (int e = 0; e < list.size(); e++) {
StringBuilder s1 = new StringBuilder(list.get(e));
if (list.get(i).equals(s1.reverse().toString())) {
Pair pair = new Pair();
pair.first = list.get(i);
pair.second = list.get(e);
result.add(pair);
list.remove(i);
list.remove(e);
break;
}
}
}
}
for (Pair p : result) {
{
System.out.println(p.first + " " + p.second);
}
}
}
public static class Pair {
String first;
String second;
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Pair pair = (Pair) o;
if (first != null ? !first.equals(pair.first) : pair.first != null) return false;
return second != null ? second.equals(pair.second) : pair.second == null;
}
@Override
public int hashCode() {
int result = first != null ? first.hashCode() : 0;
result = 31 * result + (second != null ? second.hashCode() : 0);
return result;
}
@Override
public String toString() {
return first == null && second == null ? "" :
first == null ? second :
second == null ? first :
first.compareTo(second) < 0 ? first + " " + second : second + " " + first;
}
}
}