Class InformationRecord2

InformationRecord2

public class InformationRecord2

Class InformationRecord2 defines a simple record structure, suitable for use in testing the LookupTable class of assignment 3.

Field Summary

protected java.lang.String	address Street address
protected int	age Age
protected int	id Unique 9-digit id
protected java.lang.String	name Person name

Constructor Summary

InformationRecord2(java.lang.String name, int age, int id, java.lang.String address)
Construct an InformationRecord with the given field values.

Method Summary

boolean	equals(java.lang.Object obj) Define equals as elementwise equality.
java.lang.Object	getKey() Return the id field of this as the key value.
java.lang.Object	getKey2() Return the id field of this as the key value.
int	hash(java.lang.Object key, int tableSize) Compute the hash index for this record as the given key modulo the given table size.
int	hash2(java.lang.Object key, int tableSize) Compute the hash index for this record by summing all of the characters of the given String key with the following formula: (37 * char[0]) + (37^2 * char[1]) + ...
java.lang.String	toString() Convert this to a four-tuple of the form {name, age, id, address}.

Field Detail

name

protected java.lang.String name

Person name

age

protected int age

Age

id

protected int id

Unique 9-digit id

address

protected java.lang.String address

Street address

Constructor Detail

InformationRecord2

public InformationRecord2(java.lang.String name,
                          int age,
                          int id,
                          java.lang.String address)

Construct an InformationRecord with the given field values.

Method Detail

getKey

public java.lang.Object getKey()

Return the id field of this as the key value.

getKey2

public java.lang.Object getKey2()

Return the id field of this as the key value.

hash

public int hash(java.lang.Object key,
                int tableSize)

Compute the hash index for this record as the given key modulo the given table size. The given key is assumed to be an Integer id.

hash2

public int hash2(java.lang.Object key,
                 int tableSize)

Compute the hash index for this record by summing all of the characters of the given String key with the following formula: (37 * char[0]) + (37^2 * char[1]) + ... + (37^(l-1) * char[l]) where 37 is an empirically chosen value to provide good distribution and l = key.length(). Return the sum mod the given table size.

toString

public java.lang.String toString()

Convert this to a four-tuple of the form {name, age, id, address}.

equals

public boolean equals(java.lang.Object obj)

Define equals as elementwise equality.