/**
 *  Substring search.
 */

public class Ex21 {

    public static void main(String[] args) {
        System.out.println(substringSearch("able was I ere I saw elba", "ere"));
    }

    private static boolean substringSearch(String string, String substring) {
        boolean found = false;
        int max = string.length() - substring.length();
        
        test:
        for(int i = 0; i <= max; i++) {
            int n = substring.length();
            int j = i;
            int k = 0;
            while(n-- != 0) {
        	System.out.println("i: " + i + "j: " + j + "k: " + k);
                if(string.charAt(j++) != substring.charAt(k++))
                    continue test;
            }
            found = true;
            break;
        }
        
        return found;
    }
}