Hi, could anyone please help me with that? I don't know what is wrong with my solution. It passes all my examples. Though, I clearly miss something.
package com.codegym.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;
/*
Inverted words
*/
public class Solution {
public static List<Pair> result = new LinkedList<>();
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
BufferedReader bufferedReader = new BufferedReader(new FileReader(reader.readLine()));
ArrayList<String> list = new ArrayList<>();
while (bufferedReader.ready()){
String[] table = bufferedReader.readLine().split(" ");
list.addAll(Arrays.asList(table));
}
for (int i = 0; i < list.size(); i++){
StringBuilder s = new StringBuilder(list.get(i));
if (list.contains(s.reverse().toString())){
Pair pair = new Pair();
pair.first = s.toString();
pair.second = s.reverse().toString();
if (!result.contains(pair)){
result.add(pair);
list.remove(s.toString());
list.remove(s.reverse().toString());
}
}
}
for (Pair p : result){
System.out.println(p);
}
}
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;
}
}
}