Написал такую каракатицу. Не пойму почему выводит пары палиндромов не в том порядке как в файле (содержание файла как в примере в условии)
public class Solution {
public static List<Pair> result = new LinkedList<>();
public static void main(String[] args) {
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(bufferedReader.readLine()),"UTF-8"))){
String data = "";
while (reader.ready()) {
data += reader.readLine() + " ";
}
//System.out.println(data);
ArrayList<String> words = new ArrayList<>(Arrays.asList(data.split(" ")));//поместили в список слова из файла, просплитав через пробелы
Map <String, String> map = new HashMap<>();//чтобы отсечь повторяющиеся ключи
for (String word1: words
) {
for (String word2: words
) {
StringBuilder stringBuilderReverse = new StringBuilder(word2);
String word2Reverse = stringBuilderReverse.reverse().toString();
if (word1.equals(word2Reverse)&&!map.containsValue(word2Reverse)) {
map.put(word1, word2);
}
}
}
for (Map.Entry<String, String> entry: map.entrySet()
) {
//System.out.println(entry.getKey()+" : "+entry.getValue());
Pair pair = new Pair();
pair.first = entry.getKey();
pair.second = entry.getValue();
result.add(pair);
}
result.forEach(System.out::println);
} catch (Exception 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;
}
}
}
вывод:
рот тор
тот тот
о оpackage com.javarush.task.task22.task2207;
import java.io.BufferedReader;
import java.io.FileInputStream;
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) {
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(bufferedReader.readLine()),"UTF-8"))){
String data = "";
while (reader.ready()) {
data += reader.readLine() + " ";
}
System.out.println(data);
ArrayList<String> words = new ArrayList<>(Arrays.asList(data.split(" ")));//поместили в список слова из файла, просплитав через пробелы
Map <String, String> map = new HashMap<>();//чтобы отсечь повторяющиеся значения
for (String word1: words
) {
for (String word2: words
) {
StringBuilder stringBuilderReverse = new StringBuilder(word2);
String word2Reverse = stringBuilderReverse.reverse().toString();
if (word1.equals(word2Reverse)&&!map.containsValue(word2Reverse)) {
map.put(word1, word2);
}
}
}
for (Map.Entry<String, String> entry: map.entrySet()
) {
Pair pair = new Pair();
pair.first = entry.getKey();
pair.second = entry.getValue();
result.add(pair);
}
result.forEach(System.out::println);
} catch (Exception 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;
}
}
}