hashMap.java

https://www.hackerrank.com/challenges/two-strings/problem?h_l=interview&playlist_slugs%5B%5D=interview-preparation-kit&playlist_slugs%5B%5D=dictionaries-hashmaps

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

public class Solution {

 // Complete the twoStrings function below.
 static String twoStrings(String s1, String s2) {

 String[] split1 = s1.split("");
 String[] split2 = s2.split("");
 HashMap<String, Integer> firstMap = new HashMap<String, Integer>();
 for( int i = 0; i<split1.length; i++ ){
 if( firstMap.get( split1[i] ) == null ){
 firstMap.put( split1[i], 1 );
 }
 }
 for( int i = 0; i<split2.length; i++ ){
 if( firstMap.get( split2[i] ) != null ){
 return "YES";
 }
 }
 return "NO";
 
 }

 private static final Scanner scanner = new Scanner(System.in);

 public static void main(String[] args) throws IOException {
 BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

 int q = scanner.nextInt();
 scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

 for (int qItr = 0; qItr < q; qItr++) {
 String s1 = scanner.nextLine();

 String s2 = scanner.nextLine();

 String result = twoStrings(s1, s2);

 bufferedWriter.write(result);
 bufferedWriter.newLine();
 }

 bufferedWriter.close();

 scanner.close();
 }
}