[Lucky Algorithm] Missing Numbers (46/77)

Missing Numbers (Hacker Rank)

Numeros, the Artist, had two lists and , such that was a permutation of . Numeros was very proud of these lists. Unfortunately, while transporting them from one exhibition to another, some numbers were left out of . Can you find the missing numbers?

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in =  new Scanner(System.in);
        int n = in.nextInt();
        List<String> arrA = new ArrayList<String>();
        List<String> result = new ArrayList<String>();
        for(int i = 0; i < n; i++){
            arrA.add(in.next());
        }

        int m = in.nextInt();
        for(int j = 0; j < m; j++){
            String tmp = in.next();
            if(arrA.contains(tmp)){
                arrA.remove(tmp);
            }else{
                if(!result.contains(tmp)){
                    result.add(tmp);
                }
            }
        }

        Collections.sort(result);
        for(int i = 0; i < result.size(); i++){
            System.out.print(result.get(i) + " ");
        }
    }
}

행운의 77문제 프로젝트

  행운의 77문제 프로젝트는 한 달동안 알고리즘 문제 77개를 푸는 프로젝트입니다.