Помогите пожалуйста разобраться, пробовала разные варианты, выводит все согласно условию задачи. Спасибо!
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) throws IOException {
BufferedReader br =new BufferedReader(new InputStreamReader(System.in));
BufferedReader br1 = new BufferedReader(new FileReader(br.readLine()));
String [] mas=null;
ArrayList<String> ar = new ArrayList<>();
while (br1.ready()){
String fromFile = br1.readLine();
mas= fromFile.split(" ");
ar.addAll(Arrays.asList(mas));
}
for (int i = 0; i < ar.size(); i++) {
if(ar.get(i).length()==1){
String one = ar.get(i);
ar.remove(ar.get(i));
if(ar.contains(one)){
Pair pair = new Pair();
pair.first = one;
pair.second=one;
result.add(pair);
ar.remove(one);
}
}else{
StringBuilder sb=new StringBuilder(ar.get(i));
sb.reverse();
String s = sb.toString();
if(ar.contains(s)){
Pair pair = new Pair();
pair.first = ar.get(i);
pair.second = s;
result.add(pair);
ar.remove(ar.get(i));
ar.remove(s);
}
}
}
for (Pair p: result) {
System.out.println(p.toString());
}
br.close();
br1.close();
}
public static class Pair {
String first;
String second;
public Pair(){
}
@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;
}
}
}