// Source code example for "A Practical Introduction
// to Data Structures and Algorithm Analysis"
// by Clifford A. Shaffer, Prentice Hall, 1998.
// Copyright 1998 by Clifford A. Shaffer

class Pair {      // Each BPNode stores an array of Pair
  Object pointer; // BPNode leaves point to Elem,
                  // BPNode internal nodes point to BPNode
  int key;        // The key value for this pair
} // class Pair