简单的字数统计

// $Id: wc.java,v 1.2 2001/05/31 22:56:19 doug Exp $
// http://www.bagley.org/~doug/shootout/
// with help from Dirus@programmer.net

import java.io.*;
import java.util.*;
import java.text.*;

// this program modified from:
//   http://cm.bell-labs.com/cm/cs/who/bwk/interps/pap.html
// Timing Trials, or, the Trials of Timing: Experiments with Scripting
// and User-Interface Languages</a> by Brian W. Kernighan and
// Christopher J. Van Wyk.

public class wc {
public static void main(String[] args) {
int nl = 0, nw = 0, nc = 0;

try {
byte[] buff = new byte[4096];
boolean inword = false;
int length;

while ((length = System.in.read(buff)) != -1) {
nc += length;
for(int i = 0; i < length; i++) {
char c = (char)buff[i];
if (c == '\n')
++nl;
if (Character.isWhitespace(c))
inword = false;
else if (inword == false) {
++nw;
inword = true;
}
}
}
} catch (IOException e) {
System.err.println(e);
return;
}
System.out.println(Integer.toString(nl) + " " +
Integer.toString(nw) + " " +
Integer.toString(nc));
}
}