/**
 *  file :  Word.java
 *  desc :  Implements a Word, which is a Hashable String
 *          Words are automatically stored in lowercase
 */

import HashTable.Hashable;

public class Word implements Hashable {

  /** post :  initializes this word to have the value v,
   *          in lowercase  */
  public Word( String v ) {
    word = v.toLowerCase();
  }

  /** post :  returns the String value of this word */
  public String toString() {
    return word;
  }

  /** post :  returns the length of the word */
  public int length() {
    return word.length();
  }

  /** post :  Returns the hashed value of this String as an integer.
   *          Hashed value in the range:
   *              [0 .. Integer.MAX_VALUE]
   */
  public int hashFunction() {
    // NOTE : This is hash function performs poorly
    // Replace it with your own
    if( word.length() == 0 ) return 0;

    int c = word.charAt(0) - 'a';
    if( c < 0 )
      c = -c;

    return c;
  }

  /**
   *   pre :  o poitns to a valid Word
   *  post :  returns true <==> string values are equal
   */
  public boolean equals( Object o ) {
    Word wo = (Word)o;

    return word.equals(wo.word);
  }

  private String word;
}

// eof