the result is that the string is duplicate and display each element in a line but it don t pass the verification .Why????
package com.codegym.task.task07.task0717;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Duplicating words
*/
public class Solution {
public static void main(String[] args) throws Exception {
// Read strings from the console and declare an ArrayList here
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list= new ArrayList<String>();
for(int i=0;i<10;i++)
{
String s= reader.readLine();
list.add(s);
}
ArrayList<String> result = doubleValues(list);
for(int i=0;i<10;i++)
{
System.out.println(list.get(i) + ", "+ result.get(i));
}
}
public static ArrayList<String> doubleValues(ArrayList<String> list) {
//write your code here
ArrayList<String> list2 = new ArrayList<String>();
for(int i=0;i<list.size();i++)
{
String s =list.get(i);
if(s!= null)
{
list2.add(s);
}
}
return list2;
}
}