This code shows RunTime error in last test case when i take the input using BufferedReader. But when i change input method to Scanner , it passes 100%. What is the reason for that?

#1

import java.util.*;

import java.io.*;

public class Main {

public static void main(String args[])throws IOException {

    // Your Code Here

	BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

	int n=Integer.parseInt(br.readLine());

	String arr[]=br.readLine().split(" ");

	String brr[]=br.readLine().split(" ");

	HashMap<Long,Long> s=new HashMap<>();

	for(int i=0;i<n;i++){

		long x=Long.parseLong(arr[i]);

		if(s.containsKey(x)){

			s.replace(x,s.get(x)+1);

		}

		else s.put(x,1L);

	}

	// SortedSet<Integer> r=new TreeSet<>();

	List<Long> res=new ArrayList<>();

	for(int i=0;i<n;i++){

		long x=Long.parseLong(brr[i]);

		if(s.containsKey(x) && s.get(x)>0){

			res.add(x);

			s.replace(x,s.get(x)-1);

		}

	}

	Collections.sort(res);

	System.out.println(res);

}

}

#2

There’s a problem with the formatting of one test case, what you can do is first trim the string and then convert to Integer. br.readLine().trim() , this way it should pass all cases.

#3

Thanks, that helped. :slight_smile:

#4

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