WordCountComparisonpublic class WordCountComparison extends Object
| Fields Summary |
|---|
| static char[] | NewLine |
| Methods Summary |
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| public static void | cwordcount(java.lang.String filename)
int count = 0;
FileReader rdr = new FileReader(filename);
char[] buf = new char[8192];
int len;
int idx = 0;
char c = ' ";
while( (len = rdr.read(buf, 0, buf.length)) != -1)
{
idx = 0;
int start;
//if we are already in a word, then skip the rest of it
if (Character.isLetterOrDigit(c))
while( (idx < len) && Character.isLetterOrDigit(buf[idx]) ) {idx++;}
while(idx < len)
{
//skip non alphanumeric
while( (idx < len) && !Character.isLetterOrDigit(buf[idx]) ) {idx++;}
//skip word
start = idx;
while( (idx < len) && Character.isLetterOrDigit(buf[idx]) ) {idx++;}
if (start < len)
{
count++; //count word
}
}
c = buf[idx-1]; //get last character so we know whether to carry on a word
}
System.out.println(count + " words found.");
| | public static void | main(java.lang.String[] args)
String NewLineStr = System.getProperty("line.separator");
NewLine = new char[NewLineStr.length()];
NewLineStr.getChars(0, NewLine.length, NewLine, 0);
maintest(args);
if (args.length > 1)
maintest(args);
| | public static void | maintest(java.lang.String[] args)
try
{
long time = System.currentTimeMillis();
wordcount(args[0]);
time = System.currentTimeMillis() - time;
System.out.println("wordcount time (millis) = " + time);
System.gc();
System.gc();
System.gc();
System.gc();
time = System.currentTimeMillis();
cwordcount(args[0]);
time = System.currentTimeMillis() - time;
System.out.println("cwordcount time (millis) = " + time);
System.gc();
System.gc();
System.gc();
System.gc();
}
catch(Exception e){e.printStackTrace();}
| | public static void | wordcount(java.lang.String filename)
int count = 0;
FileReader r = new FileReader(filename);
StreamTokenizer rdr = new StreamTokenizer(r);
rdr.resetSyntax();
rdr.wordChars('a", 'z");
rdr.wordChars('A", 'Z");
rdr.wordChars('0",'9");
rdr.whitespaceChars(0, '0"-1);
rdr.whitespaceChars('9"+1, 'A"-1);
rdr.whitespaceChars('z"+1, '\uffff");
int token;
while( (token = rdr.nextToken()) != StreamTokenizer.TT_EOF)
{
if ( token == StreamTokenizer.TT_WORD)
{
count++;
}
}
System.out.println(count + " words found.");
r.close();
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