// Return a reference to the WeeklyEmployee AT THE GIVEN INDEX if index is in

// range, or return null if index < 0 or index >= size

public WeeklyEmployee get(int index) {

  if (index < 0 || index >= size())

    return null;

  else

   return employee[index];

public class String127A {

  private int n;

  private char[] theChars;

  // Precondition: initialString.length() <= 128

  public String127A(String initialString) {

    theChars = new char[128];

    n = initialString.length();

    for (int i = 0; i < n; i++)

      theChars[i] = initialString.charAt(i);

  }

  public int length() {

    return n;

  }

  // Precondition: index is in range of 0..size() - 1

  public char charAt(int index) {

     return theChars[index];

  }