i don't pass testing. My program is working. Can you give me a hint please? Thx
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 {
// C:\Users\vince\Desktop\Test5.txt
List<String> list = new ArrayList<>();
StringBuilder builder = new StringBuilder();
int counter = 0;
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = reader.readLine();
reader.close();
BufferedReader fileReader = new BufferedReader(new FileReader(fileName));
while (true){
String data = fileReader.readLine();
if (data == null) {
fileReader.close();
break;
}
String[] parts = data.split(" ");
list.addAll(Arrays.asList(parts));
//dff
}
while (!list.isEmpty() && counter<list.size()) {
for (String s : list) {
counter ++;
builder.setLength(0);
builder.append(s);
String normal = String.valueOf(builder);
String reverse = String.valueOf(builder.reverse());
if (list.contains(reverse)) {
Pair pair = new Pair();
pair.first = normal;
pair.second = reverse;
result.add(pair);
list.removeIf(s1 -> s1.equals(normal) || s1.equals(reverse));
counter = 0;
break;
}
}
}
for (Pair p : result){
System.out.println(p.first + " " + p.second);
}
}
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;
}
}
}