/**
* Main program.
*
* @param array $args Command-line arguments.
* @return integer Zero on succes; non-zero on failure.
*/
public static function main($args)
{
printf("Demonstration program number 4.\n");
$status = 0;
ChainedHashTable::main($args);
ChainedScatterTable::main($args);
OpenScatterTable::main($args);
OpenScatterTableV2::main($args);
return $status;
}
return new ChainedHashTable_Iterator($this);
}
/**
* Compares this chained hash table with the specified comparable object.
* This method is not implemented.
*
* @param object IComparable $arg
* The comparable object to which this chained hash table is compared.
*/
protected function compareTo(IComparable $arg)
{
throw new MethodNotImplementedException();
}
/**
* Main program.
*
* @param array $args Command-line arguments.
* @return integer Zero on success; non-zero on failure.
*/
public static function main($args)
{
printf("ChainedHashTable main program.\n");
$status = 0;
$hashTable = new ChainedHashTable(57);
AbstractHashTable::test($hashTable);
return $status;
}
}
if (realpath($argv[0]) == realpath(__FILE__)) {
exit(ChainedHashTable::main(array_slice($argv, 1)));
}
/**
* Counts the number of distinct words in the input stream and then
* prints a table of the words and the number of occurrences
* on the output stream.
* Uses a hash table.
*
* @param resource $in The input stream.
* @param resource $out The output stream.
*/
public static function wordCounter($in, $out)
{
$table = new ChainedHashTable(1031);
while (($line = fgets($in)) != false) {
$words = preg_split('/[ \\t\\n]+/', $line, -1, PREG_SPLIT_NO_EMPTY);
foreach ($words as $word) {
$assoc = $table->find(new Association(box($word)));
if ($assoc === NULL) {
$table->insert(new Association(box($word), box(1)));
} else {
$count = unbox($assoc->getValue());
$assoc->setValue(box($count + 1));
}
}
}
fprintf($out, "%s\n", str($table));
}
