public class Solution {
public static List<Pair> result = new LinkedList<>();
public static void main(String[] args) {
try (BufferedReader bf = new BufferedReader(new FileReader(new BufferedReader(new InputStreamReader(System.in)).readLine()))) {
String temp;
StringBuilder stringBuilder = new StringBuilder();
while ((temp = bf.readLine()) != null) {
stringBuilder.append(" " + temp);
}
ArrayList<String> list = new ArrayList<>(Arrays.asList(stringBuilder.toString().split(" ")));
for (int i = 0; i < list.size(); i++) {
for (int j = i + 1; j < list.size(); j++) {
String revers = new StringBuilder(list.get(j)).reverse().toString();
if (list.get(i).equals(revers)) {
Pair pair = new Pair();
pair.first = list.get(i);
pair.second = list.get(j);
result.add(pair);
list.remove(i);
list.remove(j - 1);
i = 0;
break;
}
}
}
for (Pair item : result
) {
System.out.println(item);
}
} 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 != null ? second :
second == null && first != null ? first :
first.compareTo(second) < 0 ? first + " " + second : second + " " + first;
}
}
}
Вали: Список result должен быть заполнен корректными парами согласно условию задачи.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.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 bf = new BufferedReader(new FileReader(new BufferedReader(new InputStreamReader(System.in)).readLine()))) {
String temp;
StringBuilder stringBuilder = new StringBuilder();
while ((temp = bf.readLine()) != null) {
stringBuilder.append(" " + temp);
}
ArrayList<String> list = new ArrayList<>(Arrays.asList(stringBuilder.toString().split(" ")));
for (int i = 0; i < list.size(); i++) {
for (int j = i + 1; j < list.size(); j++) {
String revers = new StringBuilder(list.get(j)).reverse().toString();
if (list.get(i).equals(revers)) {
Pair pair = new Pair();
pair.first = list.get(i);
pair.second = list.get(j);
result.add(pair);
list.remove(i);
list.remove(j - 1);
i = 0;
break;
}
}
}
for (Pair item : result
) {
System.out.println(item);
}
} 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 != null ? second :
second == null && first != null ? first :
first.compareTo(second) < 0 ? first + " " + second : second + " " + first;
}
}
}