solution.java

// Never seen it before = insert and set to 1 to indiciate we've now seen it
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 sherlockAndAnagrams function below.
    static int sherlockAndAnagrams(String s) {
        HashMap<String, Integer> map = new HashMap<String, Integer>();

        // total anagrams
        int totalCount = 0;

        for (int i = 0; i < s.length(); i++) {
            for (int j = i + 1; j <= s.length(); j++) {
                String currentSubString = s.substring(i, j);

                // Sort all strings E.g. ab & ba both == ab
                char[] chars = currentSubString.toCharArray();
                Arrays.sort(chars);
                currentSubString = String.valueOf(chars);

                // If sorted substring has been seen before
                if (map.containsKey(currentSubString)) {
                    // Check how many times we've seen it and add that amount to the count
                    int value = map.get(currentSubString);
                    totalCount = totalCount + value;

                    // Increament the times we've seen the string
                    map.put(currentSubString, value + 1);
                } else {
                    // if we are seeing it for the first time set it's value as 1
                    map.put(currentSubString, 1);
                }
            }
        }
        return totalCount;

    }

    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 s = scanner.nextLine();

            int result = sherlockAndAnagrams(s);

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

        bufferedWriter.close();

        scanner.close();
    }
}