Пример из условия и его модификации вроде нормально выводит, но не пропускает...
package com.javarush.task.task22.task2207;
import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
/*
Обращенные слова
*/
public class Solution {
public static List<Pair> result = new LinkedList<>();
public static void main(String[] args) {
try (BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
BufferedReader reader = new BufferedReader(new FileReader(console.readLine()))) {
StringBuilder line = new StringBuilder("");
while (reader.ready()) {
String fileLine = reader.readLine() + " ";
line.append(fileLine);
}
String[] words = line.toString().split(" ");
for (int a =0; a < words.length; a++){
for (int b = 0; b < words.length; b++){
if (a == b){
continue;
}
if (words[a].equals(words[b]) && words[a].length() == 1 && words[b].length() == 1){
Pair pair = new Pair();
pair.first = words[a];
pair.second = words[b];
if (!result.contains(pair)){
result.add(pair);
continue;
}
}
StringBuilder reversedWord = new StringBuilder(words[b]);
reversedWord.reverse();
if (words[a].contentEquals(reversedWord)){
Pair pair = new Pair();
pair.first = words[a];
pair.second = words[b];
if (!result.contains(pair)){
pair.first = words[b];
pair.second = words[a];
if (!result.contains(pair)){
pair.first = words[a];
pair.second = words[b];
result.add(pair);
}
}
}
}
}
for (Pair pair : result){
System.out.println(pair);
}
} catch (IOException e) {
e.printStackTrace();
}
}
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;
}
}
}
