a string "contains" a word if a sub-sequence of the characters in the string can spell the word (characters must all appear and in the same order - takes q queries, each query consists of a string, For each query, print YES on a new line if string contains word; otherwise, print NO instead.

SubSequenceTest.java

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

public class SubSequenceTest {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int q = in.nextInt();
        String hr = "hackerrank";
        wordloop :
        for(int a0 = 0; a0 < q; a0++){
            String s = in.next();
            // your code goes here
            int lastfound = -1;
            int i;
            for (i=0; i<10;i++){
                lastfound = s.indexOf(hr.charAt(i), lastfound+1);
                //System.out.println(lastfound + " " +i);

                if (lastfound < 0) {
                    Boolean contains = false;
                    System.out.println("NO");
                    continue wordloop;
                }
            }
            if ((lastfound > -1) && i==10) System.out.println("YES");
        }
    }
}

note label wordloop and use of continue label; to deal with nested loops (otherwise No printed multiple times, and i still increments.)