// NOTE: SOLUTION CHECKER BROKEN
public class ReplacementTester
{
   public static void main(String[] args)
   {
      String greeting = "Hello, elite hacker!";
      char[] string = greeting.toCharArray();

      int i = 0;
      for(char ch : string)
      {
         switch(ch)
         {
         case 'e':
            string[i] = '3';
            break;
         case 'i':
            string[i] = 'l';
            break;
         case 'l':
            string[i] = '7';
            break;
         case 'o':
            string[i] = '0';
            break;
         }
         i++;
      }
      String modifiedGreeting = new String(string);

      System.out.println(modifiedGreeting);
      System.out.println("Expected: H3770, 371t3 hack3r!");
   }
}