Hackerrank - Prepare | Algorithms | Strings | Two Strings


Given two strings, determine if they share a common substring. A substring may be as small as one character.

Example

These share the common substring .


These do not share a substring.

Function Description

Complete the function twoStrings in the editor below.

twoStrings has the following parameter(s):

  • string s1: a string
  • string s2: another string

Returns

  • string: either YES or NO

Input Format

The first line contains a single integer , the number of test cases.

The following  pairs of lines are as follows:

  • The first line contains string .
  • The second line contains string .

Constraints

  •  and  consist of characters in the range ascii[a-z].

Output Format

For each pair of strings, return YES or NO.

Sample Input

2
hello
world
hi
world

Sample Output

YES
NO

Explanation

We have  pairs to check:

  1. , . The substrings  and  are common to both strings.
  2. , .  and  share no common substrings.

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    /*
     * Complete the 'twoStrings' function below.
     *
     * The function is expected to return a STRING.
     * The function accepts following parameters:
     *  1. STRING s1
     *  2. STRING s2
     */

public static String twoStrings(String s1, String s2) {
        Integer[] count = new Integer[26];
        Arrays.fill(count, 0);
        
        for (int i = 0; i < s1.length(); i++) {
            count[s1.charAt(i)-97] = 1;
       }

       for (int i = 0; i < s2.length(); i++) {
            if (count[s2.charAt(i)-97] == 1) 
                return "YES";
       }
       return "NO";
        
    }


}

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

        int q = Integer.parseInt(bufferedReader.readLine().trim());

        IntStream.range(0, q).forEach(qItr -> {
            try {
                String s1 = bufferedReader.readLine();

                String s2 = bufferedReader.readLine();

                String result = Result.twoStrings(s1, s2);

                bufferedWriter.write(result);
                bufferedWriter.newLine();
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        });

        bufferedReader.close();
        bufferedWriter.close();
    }
}


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