SaveThePrisoner.java

package br.com.eduardocintra.easy.savetheprisoner;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.stream.IntStream;

class Result {

  /*
   * Complete the 'saveThePrisoner' function below.
   *
   * The function is expected to return an INTEGER.
   * The function accepts following parameters:
   *  1. INTEGER n
   *  2. INTEGER m
   *  3. INTEGER s
   */

  public static int saveThePrisoner(int n, int m, int s) {
    /*
     * Please, if this code helps you, leave your star on the repository:
     * https://github.com/eduardocintra/hacker-rank-solutions
     */
    int lastChair = (s + m - 1) % n;
    return lastChair == 0 ? n : lastChair;
  }
}

public class SaveThePrisoner {
  public static void main(String[] args) throws IOException {
    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
    BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(System.out));

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

    IntStream.range(0, t)
        .forEach(
            tItr -> {
              try {
                String[] firstMultipleInput =
                    bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

                int n = Integer.parseInt(firstMultipleInput[0]);

                int m = Integer.parseInt(firstMultipleInput[1]);

                int s = Integer.parseInt(firstMultipleInput[2]);

                int result = Result.saveThePrisoner(n, m, s);

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

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